Entries |
Document | Title | Date |
20080213145 | Method of Decomposing Nitrogen Dioxide - A method of decomposing NO | 09-04-2008 |
20080219906 | Multilayered Catalyst Compositions - A multilayered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Provided is a catalytic material of at least four layers in conjunction with a carrier, where each of the layers includes a support, at least three layers comprise a precious metal component, and at least one layer comprises an oxygen storage component (OSC). The catalytic material can further comprise a fifth layer, where at least four layers comprise a precious metal component, at least one layer comprises an oxygen storage component, and at least one layer is substantially free of an oxygen storage component. | 09-11-2008 |
20080279738 | Zeolite Catalyst for the Simultaneous Removal of Carbon Monoxide and Hydrocarbons From Oxygen-Rich Exhaust Gases and Processes for the Manufacture Thereof - Catalyst containing tin oxide, palladium and one or more zeolites as carrier oxide, in which the zeolite preferably has a silicon/aluminum ratio of >4. Said catalyst is utilized for the removal of harmful substances from lean combustion engines and exhaust airs, preferably for the simultaneous removal of carbon monoxide and hydrocarbons and sooty particles from diesel exhaust gases. | 11-13-2008 |
20080286184 | Selective catalytic reduction type catalyst, and exhaust gas purification equipment and purifying process of exhaust gas using the same - The present invention relates to a technology to purify nitrogen oxides contained in exhaust gas exhausted from lean combustion engines such as diesel engine with ammonia and a selective catalytic reduction type catalyst, and an object of the present invention is to provide a selective catalytic reduction type catalyst which can effectively purify nitrogen oxides even at a low temperature as well as inhibit leak of ammonia, and an exhaust gas purification equipment and a purifying process of exhaust gas using the same. | 11-20-2008 |
20090004079 | MULTI-COMPONENT CATALYST SYSTEM AND METHOD FOR THE REDUCTION OF NOx - A catalyst system for the reduction of NO | 01-01-2009 |
20090041643 | Multilayered Catalyst Compositions - A layered three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Engine exhaust treatment system and methods of using the same are also provided. In one or more embodiments, the catalyst supported on a carrier has three layers, where at least two of the layers are zoned to have an oxygen storage component being present in an upstream zone in an amount that is less than the oxygen storage component present in the downstream zone. | 02-12-2009 |
20090041644 | Catalyst Compositions - Provided are catalyst composites comprising: a catalytic material on a carrier, the catalytic material comprising a precious metal selected from a palladium component and an oxygen storage component, the oxygen storage component being present in an amount of at least 10% by weight, wherein substantially all of the oxygen storage component is in intimate contact with the palladium component and the catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. A catalyst composite comprising: a catalytic material on a carrier, the catalytic material comprising a palladium component and a ceria-zirconia composite support, the ceria being present in an amount in the range of 10 to 70% by weight, wherein substantially all of the ceria is in intimate contact with at least a portion of the palladium component. Methods of making and using these catalysts are also provided. | 02-12-2009 |
20090041645 | Catalyst Compositions - Provided are catalyst composites comprising: a catalytic material on a carrier, the catalytic material comprising a precious metal selected from a palladium component and an oxygen storage component, the oxygen storage component being present in an amount of at least 10% by weight, wherein substantially all of the oxygen storage component is in intimate contact with the palladium component and the catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. A catalyst composite comprising: a catalytic material on a carrier, the catalytic material comprising a palladium component and a ceria-zirconia composite support, the ceria being present in an amount in the range of 10 to 70% by weight, wherein substantially all of the ceria is in intimate contact with at least a portion of the palladium component. Methods of making and using these catalysts along with systems containing these catalysts are also provided. | 02-12-2009 |
20090087365 | REMOVAL OF PARTICULATES FROM THE EXHAUST GAS OF INTERNAL COMBUSTION ENGINES OPERATED WITH A PREDOMINANTLY STOICHIOMETRIC AIR/FUEL MIXTURE - The exhaust gas of internal combustion engines operated with a predominantly stoichiometric air/fuel mixture contains, as well as the gaseous hydrocarbon (HC), carbon monoxide (CO) and nitrogen oxide (NO | 04-02-2009 |
20090098033 | Carbon-Encased Metal Nanoparticles and Sponges, Methods of Synthesis, and Methods of Use - We disclose novel metallic nanoparticles coated with a thin protective carbon shell, and three-dimensional nano-metallic sponges; methods of preparation of the nanoparticles; and uses for these novel materials, including wood preservation, strengthening of polymer and fiber/polymer building materials, and catalysis. | 04-16-2009 |
20090104096 | Zone Coated Catalyst to Simultaneously Reduce NOx and Unreacted Ammonia - Provided is an emissions treatment system and method for reducing NOx emissions in the exhaust stream produced from an internal combustion engine. The system has an injector for periodically metering ammonia or an ammonia precursor into an exhaust stream; and a first substrate with a first SCR catalyst composition, downstream of the injector. The first substrate has an inlet end, an outlet end, a length extending between the inlet end to the outlet end, wall elements and a plurality of passages defined by the wall elements. The first SCR catalyst composition is disposed on the wall elements from the inlet end toward the outlet end to a length that is less than the substrate's axial length to form an inlet zone. | 04-23-2009 |
20090110621 | TREATMENT OF ENGINE EXHAUST USING BORON-CONTAINING MOLECULAR SIEVE CHA - A boron-containing molecular sieve having the CHA crystal structure and comprising (1) silicon oxide and (2) boron oxide or a combination of boron oxide and aluminum oxide, iron oxide, titanium oxide, gallium oxide and mixtures thereof is prepared using a quaternary ammonium cation derived from 1-adamantamine, 3-quinuclidinol or 2-exo-aminonorbornane as structure directing agent. | 04-30-2009 |
20090175773 | Multilayered Catalyst Compositions - A layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Engine exhaust treatment systems including such catalysts are also provided. The catalyst generally comprises three layers in conjunction with a carrier. The three layers comprise two rhodium-containing layers and one palladium-containing layer. The two rhodium layers can be adjacent to each other, or they can be separated by another precious metal-containing layer. At least one of the two layers comprising the rhodium component comprises an oxygen storage component. Methods of making and using these catalysts are also provided. | 07-09-2009 |
20090180943 | Selective Ammonia Oxidation Catalysts - Catalysts, methods and systems for treating diesel engine exhaust streams are described. In one or more embodiments, the catalyst comprises a refractory metal oxide, a transition metal oxide, and platinum, the catalyst being effective to oxidize ammonia at temperatures less than about 300° C. and exhibiting no significant decrease in ammonia oxidation efficiency upon hydrothermal aging. Methods and systems including such catalysts are also provided. | 07-16-2009 |
20090214406 | CATALYTIC CONVERTER WITH IMPROVED START-UP BEHAVIOUR - In automotive exhaust gas catalysts with a metallic honeycomb composed of corrugated and smooth sheet layers, it is known that the heat capacity and thermal conductivity of the honeycomb can be reduced by perforations in the sheet layers. As a result, the honeycomb heats up more rapidly and the catalytic coating applied on the honeycomb reaches its operating temperature more rapidly. A disadvantage here is the reduction in the support surface area by the perforations in the sheet layers. According to the invention, suitable adjustment of the properties of the coating suspension used for the catalytic coating and of the dimensions of the holes relative to one another allows the holes to be filled permanently with catalyst material. The resulting catalyst has, at the same coating concentration as a catalyst with unperforated sheet layers, a significantly reduced heat capacity and thermal conductivity. | 08-27-2009 |
20090257934 | Transition metal - substituted hydrotalcite catalyst for removing nitrogen oxides from the exhaust gas of diesel engine by storage - reduction - Disclosed herein is a transition metal-substituted hydrotalcite catalyst for removing nitrogen oxides using a storage-reduction method, in which a molar ratio of transition metal to magnesium is 0.2 or less, and a method of manufacturing a transition metal-substituted hydrotalcite catalyst for removing nitrogen oxides using a storage-reduction method, including the steps of preparing a hydrotalcite synthesis solution including transition metal precursors such that the molar ratio of transition metal to magnesium is 0.2 or less, and preferably 0.001 to 0.2; aging the synthesis solution; and hydrothermally treating the synthesis solution. | 10-15-2009 |
20090257935 | BASE METAL AND BASE METAL MODIFIED DIESEL OXIDATION CATALYSTS - There is described a base metal modified Cerium containing oxide materials and their application as catalysts for the oxidation of CO and HC emissions from a compression ignition/diesel engine. These materials provide effective promotion of CO and HC oxidation function in the presence or absence of PGM and are based upon OIC/OS materials having a stable cubic crystal structure, and most especially to promoted OIC/OS materials wherein the promotion is achieved by the post-synthetic introduction of non-precious metals via a basic (alkaline) exchange process. | 10-15-2009 |
20090263300 | Stabilized Iridium and Ruthenium Catalysts - Provided herein is a non-single phase perovskite-type bulk material comprising one or more of Ru and Ir. In one embodiment, the surface region of the material is enriched with one or more of Ru and Ir relative to the bulk material. Also provided are methods for preparing the non-single phase, surface enriched perovskite-type material, catalytic articles comprising the non-single phase, surface enriched perovskite-type material and methods for their preparation, and methods for treating exhaust emissions using the non-single phase, surface enriched perovskite-type material. | 10-22-2009 |
20090285736 | Catalytic Soot Filter and Use Thereof in Treatment of Lean Exhaust Gases - The invention provides a process for reducing the amounts of carbon monoxide, hydrocarbons and soot particles in the lean exhaust gas from an internal combustion engine using a particle filter, wherein the soot particles have a soot ignition temperature T | 11-19-2009 |
20100028228 | CURRENT STORAGE ESTIMATION FOR SELECTIVE CATALYTIC REDUCTION CATALYSTS - A dosing control system comprises a selective catalytic reduction (SCR) analysis module and a dosing management module. The SCR analysis module estimates an ammonia (NH3) slip rate downstream of an SCR catalyst, an NH3 conversion rate, an NH3 supply rate, and an NH3 oxidation rate. The SCR analysis module estimates an NH3 rate of change based on the NH3 slip, conversion, supply, and oxidation rates and estimates an NH3 storage change based on the NH3 rate of change. The SCR analysis module estimates NH3 stored by the SCR catalyst based on the NH3 storage change. The dosing management module controls dosing agent injection into an exhaust system upstream of the SCR catalyst based on the NH3 stored by the SCR catalyst. | 02-04-2010 |
20100047144 | Method for the Selective Catalytic Reduction of Nitrogen Oxides in Exhaust Gases of Vehicles - The invention relates to a method for the selective catalytic reduction of nitrogen oxides using ammonia in exhaust gases of vehicles, whereby solutions of guanidine salts with an ammonia forming potential of between 40 and 850 g/kg, optionally in combination with urea and/or ammonia and/or ammonium salts, are catalytically decomposed in the presence of catalytically active, non-oxidation-active coatings of oxides selected from the group containing titanium dioxide, aluminum oxide, silicon dioxide or the mixtures thereof, and hydrothermally stable zeolites which are fully or partially metal-exchanged. The guanidine salts according to the invention enable a reduction of the nitrogen oxides by approximately 90%. Furthermore, said guanidine salts can enable an increase in the ammonia forming potential from 0.2 kg, corresponding to prior art, up to 0.4 kg ammonia per litre of guanidine salt, along with freezing resistance (freezing point below −25° C.). The risk of corrosion of the guanidine salt solutions used according to the invention is also significantly reduced compared to that of solutions containing ammonium formiate. | 02-25-2010 |
20100055012 | NITROGEN OXIDE STORAGE CATALYST FEATURING A REDUCED DESULFURIZATION TEMPERATURE - Nitrogen oxide storage catalysts are used to remove nitrogen oxides from the exhaust gas of internal combustion engines operated predominantly under lean burn conditions. When these catalysts are used in diesel vehicles, the increased sulfur content in the fuel during operation results in poisoning of the catalyst, which is reversible at high temperatures under reduced exhaust gas conditions. In the case of conventional nitrogen oxide storage catalysts, temperatures of more than 600° C. have to be obtained for desulfurization. This is not always possible in diesel vehicles with a nitrogen oxide storage catalyst in the underbody area. | 03-04-2010 |
20100055013 | PROCESS AND CATALYST SYSTEM FOR NOX REDUCTION - Process for reducing nitrogen oxides to nitrogen in an exhaust gas comprising passing the exhaust gas in the presence of an oxygen-containing organic reducing agent through a catalyst system comprising at least two catalyst beds, in which a first catalyst bed comprises only alumina and a second catalyst bed downstream comprises only indium supported on alumina. | 03-04-2010 |
20100092358 | CATALYTICALLY COATED DIESEL PARTICLE FILTER, PROCESS FOR PRODUCING IT AND ITS USE - A diesel particulate filter with an oxidation catalyst comprising platinum and palladium deposited thereon is described. Addition of HC storage components to the oxidation catalyst allows the conversion of hydrocarbons and carbon monoxide to be improved significantly. | 04-15-2010 |
20100111791 | Bimetallic Catalysts for Selective Ammonia Oxidation - Catalysts, methods, and systems for treating diesel engine exhaust streams are described. In one or more embodiments, the catalyst comprises a molecular sieve having a silica to alumina ratio (SAR) less than about 30, the molecular sieve including ion-exchanged copper and ion-exchanged platinum. Systems including such catalysts and methods of treating exhaust gas are also provided. | 05-06-2010 |
20100124523 | Emissions Treatment Catalysts - An emissions treatment catalyst formed using pH-compatible ingredients is disclosed. Engine exhaust treatment systems including such catalysts are also provided. Methods of making and using these catalysts are also provided. Methods include creating precious metal-support composites where the precious metal precursor has a solution pH that is compatible an aqueous slurry pH of the support. In one example, a basic precious metal solution having a pH of 7 or greater is mixed with a promoted refractory metal oxide support having an aqueous slurry pH of 7 or greater. On the other hand, an acidic precious metal solution having a pH of less than 7 is mixed with a promoted refractory metal oxide support having an aqueous slurry pH of less than 7. The mixture of the salt and the promoted refractory metal oxide support can be thermally treated at a temperature of at least 180° C. to thermally fix the well-dispersed precious metal on the support. Complex ions of basic solutions and include tetraamine nitrate, tetraamine hydroxide, tetraamine acetate, a primary amine nitrate, a primary amine hydroxide, a primary amine acetate, or combinations thereof. The refractory metal oxide support can be promoted by oxides of lanthanum, barium, zirconium, neodymium, yttrium, praseodymium, somarium, ceria, or combinations thereof. | 05-20-2010 |
20100135879 | TWO-LAYER-THREE-WAY CATALYST - A double-layer three-way catalyst is presented, which is formed from a catalytic coating applied directly to an inert honeycomb and a catalytically active coating thereon, and is suitable especially for cleaning of exhaust gases of motor vehicles with gasoline-operated internal combustion engines. The catalyst contains, in each layer, an active aluminum oxide and a cerium/zirconium mixed oxide, both of which are catalytically activated by palladium. The second layer on the gas side contains not only palladium but also rhodium, which is applied to the active aluminum oxide and the cerium/zirconium mixed oxide of the second layer in addition to the palladium. The cerium/zirconium mixed oxide of the second layer has a higher zirconium oxide content than the cerium/zirconium mixed oxide of the first layer. The catalyst is notable for exceptional activity coupled with outstanding aging stability. | 06-03-2010 |
20100143223 | Denitrification Catalyst, Honeycomb Structure Type Denitrification Catalyst, and Method of Denitrification with the Same - A denitrification catalyst and a honeycomb structure type denitrification catalyst which are used for efficiently removing nitrogen oxides through reduction from exhaust gases discharged from, e.g., boilers and internal combustion engines such as a gasoline engine and diesel engine; and a method of denitrification using either of these catalysts. The denitrification catalyst is for use in reducing nitrogen oxides contained in an exhaust gas with an ammonia source and comprises zeolite as the main ingredient, and is characterized in that not only iron element and cerium element but tin element and/or gallium element has been deposited on the zeolite. The honeycomb structure type denitrification catalyst comprises the denitrification catalyst and a honeycomb structure support whose surface has been covered therewith. The denitrification method is characterized by adding ammonia or urea as a reducing agent to an exhaust gas containing nitrogen oxides and bringing the mixture into contact with the denitrification catalyst or honeycomb structure type denitrification catalyst at a temperature in the range of 170-550° C. | 06-10-2010 |
20100143224 | NOVEL IRON-CONTAINING ALUMINOSILICATE ZEOLITES AND METHODS OF MAKING AND USING SAME - There is disclosed iron-containing aluminosilicate zeolites having both framework iron and iron cations on the ion-exchange sites. There is also disclosed a direct synthesis method of making an iron-containing aluminosilicate zeolite, which does not require the use of an intermediate step, such as ion-exchange or impregnation. In addition, there is disclosed a method of using the iron-containing aluminosilicate zeolite disclosed herein in a selective catalytic reduction reaction, typically in the presence of ammonia, to reduce or remove nitric oxides from exhaust emissions. | 06-10-2010 |
20100150800 | Oxidation catalyst and exhaust-gas purification system using the same - An oxidation catalyst that efficiently promotes oxidation of NO to NO | 06-17-2010 |
20100150801 | FORMED CATALYST FOR NOx REDUCTION - The present invention provides a formed catalyst comprising a binder, a zeolite, and a catalytic metal disposed on a porous inorganic material. The zeolite domains in the formed catalyst are substantially free of the catalytic metal which is disposed on and or within the porous inorganic material. The formed catalyst is in various embodiments an extrudate, a pellet, or a foamed material. In one embodiment, the catalytic metal is silver and the porous inorganic material is γ-alumina. The formed catalysts provided are useful in the reduction of NOx in combustion gas streams. | 06-17-2010 |
20100166628 | CATALYST FOR REDUCING NITROGEN-CONTAINING POLLUTANTS FROM THE EXHAUST GASES OF DIESEL ENGINES - In exhaust gas purification units for decreasing nitrogen oxides in lean-burn exhaust gas of internal combustion engines by selective catalytic reduction by means of ammonia, introduction of excess ammonia leads to undesirable emissions of unused ammonia. These emissions can be decreased by means of ammonia barrier catalysts. In the ideal case, ammonia is oxidized to nitrogen and water by these catalysts. These require additional space in the exhaust gas purification unit which may have to be taken away from the space provided for the SCR main catalyst. In addition, the use of such ammonia barrier catalysts can result in overoxidation of the ammonia to nitrogen oxides. | 07-01-2010 |
20100166629 | Oxidation Catalyst With Low CO and HC Light-Off and Systems and Methods - An oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx) from a diesel engine and methods of exhaust gas treatment are disclosed. More particularly, a washcoat composition is disclosed comprising at least two washcoat layers, a first washcoat comprising palladium supported on ceria-zirconia and ceria-zirconia-alumina and a second washcoat containing one or more of platinum and palladium and one or more hydrocarbon storage components. An undercoat may also be included in the catalyst. Also disclosed are method of exhaust gas treatment and diesel exhaust gas treatment systems that include the oxidation catalyst and a downstream soot filter. | 07-01-2010 |
20100178224 | LEAN NOx TRAP/CONVERSION CATALYST - A process and composition for converting nitrogen oxides present in exhaust gases produced by an internal combustion engine utilize cobalt and at least one alkali metal or alkaline earth metal as a component of an adsorbent. The process involves contacting the exhaust gas with an adsorbent which adsorbs the nitrogen oxides in lean-burn conditions and recurrently reducing the oxygen concentration of the exhaust gas. During such periods of reduced oxygen concentration, the nitrogen oxides are then desorbed and reduced to nitrogen, thereby reducing the concentration of the nitrogen oxides in the exhaust gas. The composition of the adsorbent comprises an oxide support and at least two components loaded on the support and containing cobalt and at least one alkali metal or alkaline earth metal. The composition demonstrates improved activity at higher temperatures and improved thermal stability. | 07-15-2010 |
20100183490 | DIESEL OXIDATION CATALYST AND USE THEREOF IN DIESEL AND ADVANCED COMBUSTION DIESEL ENGINE SYSTEMS - An oxidation catalyst composite, methods and systems for the treatment of exhaust gas emissions from an advanced combustion engine, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx) from a diesel engine and an advanced combustion diesel engine are disclosed. More particularly, washcoat compositions are disclosed comprising at least two washcoat layers, a first washcoat comprising a palladium component and a first support containing cerium and a second washcoat containing platinum and one or more molecular sieves. | 07-22-2010 |
20100215557 | Aging-Resistant Catalyst Article for Internal Combustion Engines - Catalyst articles comprising palladium and related methods of preparation and use are disclosed. Disclosed is a catalyst article comprising a first catalytic layer formed on a substrate, wherein the first catalytic layer comprises palladium impregnated on a ceria-free oxygen storage component and platinum impregnated on a refractory metal oxide, and a second catalytic layer formed on the first catalytic layer comprising platinum impregnated on an oxygen storage component and rhodium impregnated on a zirconia-coated or yttria-coated alumina. The palladium component of the catalyst article is present in a higher proportion relative to the other platinum group metal components. The catalyst articles provide improved reductions in NOx in exhaust gases, particularly after lean-rich aging. | 08-26-2010 |
20100221161 | Device for the Purification of Diesel Exhaust Gases - The invention relates to a special device for the purification of diesel exhaust gases, which device comprises, in the flow direction of the exhaust gas, an oxidation catalyst, a diesel particle filter with catalytically active coating, and, downstream of a device for introducing a reducing agent from an external reducing agent source, an SCR catalyst. The oxidation catalyst and the catalytically active coating of the diesel particle filter contain palladium and platinum. The ratio of the noble metals platinum and palladium in the overall system and on the individual components, oxidation catalyst and catalytically coated diesel particle filter, are coordinated with one another in such a way as to obtain firstly an optimum NO/NO | 09-02-2010 |
20100233051 | NITROGEN OXIDE STORAGE CATALYST FEATURING A REDUCED DESULFURIZATION TEMPERATURE - Nitrogen oxide storage catalysts are used to remove nitrogen oxides from the exhaust gas of internal combustion engines operated predominantly under lean burn conditions. When these catalysts are used in diesel vehicles, the increased sulfur content in the fuel during operation results in poisoning of the catalyst, which is reversible at high temperatures under reduced exhaust gas conditions. In the case of conventional nitrogen oxide storage catalysts, temperatures of more than 600° C. have to be obtained for desulfurization. This is not always possible in diesel vehicles with a nitrogen oxide storage catalyst in the underbody area. | 09-16-2010 |
20100290964 | HIGH Pd CONTENT DIESEL OXIDATION CATALYSTS WITH IMPROVED HYDROTHERMAL DURABILITY - There is described Pd enriched diesel oxidation catalysts and their application as catalysts for the oxidation of CO and HC emissions from a compression ignition/diesel engine. The catalysts are characterised by increased performance and hydrothermal durability these goals being achieved by employing a layered design to eliminate low temperature catalyst quenching by toxic HC species in the exhaust stream. | 11-18-2010 |
20100316545 | Platinum group metal-free catalysts for reducing the ignition temperature of particulates on a diesel particulate filter - A catalyzed diesel particulate filter (CDPF) and a method for filtering particulates from diesel engine exhaust are provided, where the catalyzed diesel particulate filter includes a substrate and a catalyst composition, where the catalyst composition contains at least one first component, at least one second component, and at least one third component, where the first component is at least one first component selected from the group consisting of cerium and a lanthanide and mixtures thereof, the at least one second component is selected from the group consisting of cobalt, copper, manganese and mixtures thereof; and the third component comprises strontium, where the first component, the second component, and the third component are in an oxide form after calcination. The catalyst on the catalyzed diesel particulate filter lowers the temperature at which particulates are removed from the CDPF by oxidizing the particulates on the filter. The catalyzed diesel particulate filter may also include a washcoat. Washcoats prepared from colloidal aluminum oxide may have higher surface areas and pore volumes loadings than washcoats containing aluminum oxide prepared from aluminum nitrate. | 12-16-2010 |
20100322833 | Urea-Resistant Catalytic Units and Methods of Using the Same - According to at least one aspect of the present invention, a urea-resistant catalytic unit is provided. In at least one embodiment, the catalytic unit includes a catalyst having a catalyst surface, and a urea-resistant coating in contact with at least a portion of the catalyst surface, wherein the urea-resistant coating effectively reduces urea-induced deactivation of the catalyst. In at least another embodiment, the urea-resistant coating includes at least one oxide from the group consisting of titanium oxide, tungsten oxide, zirconium oxide, molybdenum oxide, aluminum oxide, silicon dioxide, sulfur oxide, niobium oxide, molybdenum oxide, yttrium oxide, nickel oxide, cobalt oxide, and combinations thereof. | 12-23-2010 |
20110014099 | PARTICULATE FILTER WITH HYDROGEN SULPHIDE BLOCK FUNCTION - The invention relates to a catalytically active particulate filter which, in addition to the properties typical of particulate filters, has hydrogen sulphide block function, and to a process for removing nitrogen oxides and particulates from the exhaust gas of internal combustion engines operated predominantly under lean conditions (so-called “lean-burn engines”) using the inventive catalytically active particulate filter. This particulate filter comprises a filter body, a copper compound and an oxidation-catalytic active coating which comprises at least one catalytically active platinum group metal. The copper compound is in a second coating applied to the filter body. The two functional coatings may be applied to the filter body consecutive in the direction of flow, i.e. zoned, or layered one on top of the other. | 01-20-2011 |
20110020201 | Oxygen Storage Catalyst With Decreased Ceria Reduction Temperature - Catalysts, systems and methods for abating emissions in an exhaust stream are provided. Systems comprising a transition metal oxide stabilized oxygen storage catalyst are described. The emissions treatment system is advantageously used for the treatment of exhaust streams from lean burn engines including diesel engines and lean burn gasoline engines. | 01-27-2011 |
20110027155 | CATALYST FOR CLEANING INTERNAL COMBUSTION ENGINE EXHAUST GAS AND METHOD FOR CLEANING EXHAUST GAS USING SAID CATALYST - An Object of the patent is to remove highly reducing hydrocarbon exhausted during acceleration period, and to remove efficiently hydrocarbon even after contacting with highly reducing hydrocarbon. By using a catalyst having a higher proportion of palladium having surface charge of 2-valence or 4-valence supported than that of 0-valence by supporting palladium together with magnesium oxide, hydrocarbon exhausted from an internal combustion engine especially during acceleration period can be efficiently removed. | 02-03-2011 |
20110033353 | Preparation of Diesel Oxidation Catalyst Via Deposition of Colloidal Nanoparticles - The present invention relates to a process for preparing a catalyst, at least comprising the steps of adding a protecting agent to an aqueous solution of a metal precursor to give a mixture (M1), adding a reducing agent to mixture (M1) to give a mixture (M2), adding a support material to mixture (M2) to give a mixture (M3), adjusting the pH of mixture (M3), and separating the solid and liquid phase of mixture (M3). Furthermore, the present invention relates to the catalyst as such and its use as diesel oxidation catalyst. | 02-10-2011 |
20110044871 | COATING COMPOSITION FOR DIESEL OXIDATION CATALYSTS - The invention relates to a coating composition for diesel oxidation catalysts or a combination of diesel oxidation catalysts and diesel particle filters, said coating composition comprising a combination of a noble metal on a metal oxide, with the exception of cerium oxide, and a zeolite doped with iron. The invention also relates to a catalyst provided with the coating according to the invention, and to a method for treating the exhaust gas of diesel internal combustion engines. | 02-24-2011 |
20110058999 | LOW TEMPERATURE SELECTIVE CATALYTIC REDUCTION CATALYST AND ASSOCIATED SYSTEMS AND METHODS - According to one embodiment, described herein is an exhaust gas after-treatment system that is coupleable in exhaust gas stream receiving communication with an internal combustion engine. The exhaust gas after-treatment system includes a low temperature SCR catalyst configured to reduce NO | 03-10-2011 |
20110070134 | PROCESS AND CATALYST SYSTEM FOR SCR OF NOx - Process for reducing nitrogen oxides to nitrogen in an exhaust gas comprising passing the exhaust gas in the presence of a reducing agent through a catalyst system comprising at least two catalyst beds, in which a first catalyst bed is an iron-beta-zeolite and a second catalyst bed downstream is silver supported on alumina. | 03-24-2011 |
20110085954 | Arrangement for Reducing Nitrogen Oxides in Exhaust Gases - An arrangement and method for reducing the nitrogen oxide content in the exhaust gas of an internal combustion engine with the aid of ammonia and/or ammonia-releasing reduction agents, whereby ammonia and/or ammonia-containing reduction agent is added to the exhaust gas stream upstream of a catalyst combination composed of an SCR catalyst and a subsequent NH | 04-14-2011 |
20110165046 | System For Remediating Emissions And Method of Use - One aspect of the present invention relates to a system for remediating emissions using a hybrid oxidation catalyst system. The hybrid oxidation catalyst system includes a noble metal oxidation catalyst having noble metal particles in a first ceramic layer. The system also includes a base metal oxide catalyst disposed in a second ceramic layer situated downstream of the noble metal oxidation catalyst. The noble metal oxidation catalyst is effective to substantially prevent hydrocarbon or carbon monoxide inhibition of the base metal oxide catalyst when enhancing the NO+O | 07-07-2011 |
20110176979 | PLATINUM GROUP METAL-FREE CATALYSTS FOR REDUCING THE IGNITION TEMPERATURE OF PARTICULATES ON A DIESEL PARTICULATE FILTER - A catalyzed diesel particulate filter (CDPF) and a method for filtering particulates from diesel engine exhaust are provided, where the catalyzed diesel particulate filter includes a substrate and a catalyst composition, where the catalyst composition contains at least one first component, at least one second component, and at least one third component, where the first component is at least one first component selected from the group consisting of cerium and a lanthanide and mixtures thereof, the at least one second component is selected from the group consisting of cobalt, copper, manganese and mixtures thereof; and the third component comprises strontium, where the first component, the second component, and the third component are in an oxide form after calcination. The catalyst on the catalyzed diesel particulate filter lowers the temperature at which particulates are removed from the CDPF by oxidizing the particulates on the filter. The catalyzed diesel particulate filter may also include a washcoat. Washcoats prepared from colloidal aluminum oxide may have higher surface areas and pore volumes loadings than washcoats containing aluminum oxide prepared from aluminum nitrate. | 07-21-2011 |
20110182790 | TRANSITION METAL-CONTAINING ALUMINOSILICATE ZEOLITE - A synthetic alumino silicate zeolite catalyst containing at least one catalytically active transition metal selected from the group consisting of Cu, Fe, Hf, La, Au, In, V, lanthanides and Group VIII transition metals, which alumino silicate zeolite is a small pore aluminosilicate zeolite having a maximum ring size of eight tetrahedral atoms, wherein the mean crystallite size of the aluminosilicate zeolite determined by scanning electron microscope is >0.50 micrometer. | 07-28-2011 |
20110200506 | EXHAUST GAS PURIFYING CATALYST AND PURIFICATION METHOD USING SAME - A catalyst for the purification of exhaust gas that can be used to highly efficiently treat an exhaust gas which has moisture and fluctuates between an oxidizing atmosphere and a reducing atmosphere even after the catalyst is exposed to a high temperature is provided. The present invention relates to a catalyst for the purification of exhaust gas having a catalyst layer of catalyst components comprising a noble metal, magnesium oxide, and a refractory inorganic oxide formed on a three-dimensional structure, wherein the catalyst layer has two peaks originated from the magnesium oxide in a pore distribution obtained by mercury intrusion technique. | 08-18-2011 |
20110206584 | PALLADIUM-CONTANING OXIDATION CATALYST - According to one aspect of the present invention, a palladium-containing oxidation catalyst is provided. In one embodiment, the palladium-containing oxidation catalyst includes a first zone having a first PGM catalyst loading with a platinum (Pt) to palladium (Pd) weight ratio of no greater than 10.0; and a second zone disposed next to the first zone. In another embodiment, the second PGM catalyst loading has a palladium (Pd) to platinum (Pt) weight ratio of no greater than 4.0. | 08-25-2011 |
20110212007 | LOW PRESSURE DROP EXTRUDED CATALYST FILTER - A batch composition for making a highly porous honeycomb ceramic catalytic filter article, including base inorganic components including a mixture of a nano-zeolite powder, and an inorganic filler, in amounts defined herein; and super additives including: a mixture of at least two pore formers; a binder; and a metal salt, in amounts defined herein. Also disclosed are extruded catalyst filter articles and methods for making the articles. | 09-01-2011 |
20110212008 | Catalyzed Soot Filter - Described is a catalyzed soot filter wherein the inlet coating of the filter comprises an oxidation catalyst comprising platinum (Pt) and optionally palladium (Pd), wherein the outlet coating of the filter comprises an oxidation catalyst comprising Pd and optionally Pt, wherein the Pt concentration in the outlet coating is lower than the Pt concentration in the inlet coating and wherein the weight ratio of Pt:Pd in the outlet coating is in the range of from 0:1 to 2:1; and wherein the inlet coating and the outlet coating are present on the wall flow substrate at a coating loading ratio in the range of from 0.5 to 1.5, calculated as ratio of the loading of the inlet coating (in g/inch | 09-01-2011 |
20110217216 | Carbon Monoxide Conversion Catalyst - Catalyst articles comprising palladium and related methods of preparation and use are disclosed. Disclosed is a catalyst article comprising a first catalytic layer formed on a substrate, wherein the first catalytic layer comprises palladium impregnated on a ceria-free oxygen storage component and platinum impregnated on a refractory metal oxide, and a second catalytic layer formed on the first catalytic layer comprising platinum and rhodium impregnated on a ceria-containing oxygen storage component. The palladium component of the catalyst article is present in a higher proportion relative to the other platinum group metal components. The catalyst articles provide improved conversion of carbon monoxide in exhaust gases, particularly under rich engine operating conditions. | 09-08-2011 |
20110229392 | OXIDATION CATALYST FOR COMMERCIAL VEHICLES COMPRISING A DIESEL MOTOR - An oxidation catalyst is described for the exhaust gas purification of utility vehicles with diesel engines, which contains a substrate and a catalytically active coating of platinum, active aluminium oxide and aluminium-silicon mixed oxide. The two oxidic support materials, aluminium oxide and aluminium-silicon mixed oxide, are catalytically activated with platinum, the majority of platinum being present on the active aluminium oxide. The oxidation catalyst is distinguished by good NO oxidation rates together with a high poisoning resistance against sulfur compounds. | 09-22-2011 |
20110274603 | EXHAUST GAS PURIFICATION CATALYST, EXHAUST GAS PURIFICATION APPARATUS USING THE SAME AND EXHAUST GAS PURIFICATION METHOD - An exhaust gas purification catalyst, which is suitable as a Three Way Catalyst for efficiently purifying carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NO | 11-10-2011 |
20110286900 | PGM-Zoned Catalyst for Selective Oxidation of Ammonia in Diesel Systems - Platinum group metal zoned ammonia oxidation catalytic articles and methods of making are described. Also described are emissions treatment systems and methods of treating an exhaust stream containing ammonia using a platinum group metal zoned ammonia oxidation catalytic article. | 11-24-2011 |
20110305613 | Fe-BEA/Fe-MFI Mixed Zeolite Catalyst And Process For The Treatment Of NOx In Gas Streams - Disclosed is a catalyst, preferably for use in selective catalytic reduction (SCR), said catalyst comprising one or more zeolites of the MFI structure type, and one or more zeolites of the BEA structure type, wherein at least part of the one or more zeolites of the MFI structure type and at least part of the one or more zeolites of the BEA structure type respectively contain iron (Fe). Furthermore, an exhaust gas treatment system is described, comprising said catalyst as well as a process for the treatment of a gas stream comprising NO | 12-15-2011 |
20110305614 | Cu-CHA/Fe-MFI Mixed Zeolite Catalyst And Process For The Treatment Of NOx In Gas Streams - Described is a catalyst, preferably for use in selective catalytic reduction (SCR), said catalyst comprising one or more zeolites of the MFI structure type, and one or more zeolites of the CHA structure type, wherein at least part of the one or more zeolites of the MFI structure type contain iron (Fe), and wherein at least part of the one or more zeolites of the CHA structure type contain copper (Cu). An exhaust gas treatment system is described, comprising said catalyst as well as a process for the treatment of a gas stream comprising NO | 12-15-2011 |
20110305615 | NOx Storage Catalyst With Reduced Rh Loading - The present invention relates to a nitrogen oxide storage catalyst comprising:
| 12-15-2011 |
20110311422 | Diesel Oxidation Catalyst With Good Low-Temperature Activity - The invention relates to a method for producing a catalyst, wherein the catalyst has a high activity and selectivity with regard to the oxidation of CO and NO. The invention also relates to the catalyst produced using the method according to the invention, the use of the catalyst as oxidation catalyst as well as a catalyst component which contains the catalyst according to the invention. Finally, the invention is directed towards an exhaust-gas cleaning system which comprises the catalyst component containing the catalyst according to the invention. | 12-22-2011 |
20120027654 | CATALYST FOR PURIFICATION OF EXHAUST GAS | 02-02-2012 |
20120058031 | CAPTURE OF VOLATILIZED VANADIUM AND TUNGSTEN COMPOUNDS IN A SELECTIVE CATALYTIC REDUCTION SYSTEM - An apparatus and method for treating diesel exhaust gases are described. The system consists of two functionalities, the first being a selective catalytic reduction (SCR) catalyst system and the second being a capture material for capturing catalyst components such as vanadia that have appreciable volatility under extreme exposure conditions. The SCR catalyst component is typically based on a majority phase of titania, with added minority-phase catalyst components comprising of one or more of the oxides of vanadium, silicon, tungsten, molybdenum, iron, cerium, phosphorous, copper and/or manganese vanadia. The capture material typically comprises a majority phase of high surface area oxides such as silica-stabilized titania, alumina, or stabilized alumina, for example. | 03-08-2012 |
20120107203 | METHOD AND SYSTEM USING A FILTER FOR TREATING EXHAUST GAS HAVING PARTICULATE MATTER - A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine or a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size. | 05-03-2012 |
20120107204 | COMBINED SLIP CATALYST AND HYDROCARBON EXOTHERM CATALYST - A catalyst comprising: (a) a first layer comprising an oxidizing catalyst having an effective PGM loading such that oxidation of hydrocarbons generates sufficient heat to regenerate soot, wherein said effective amount of PGM is greater than about 10 g/ft | 05-03-2012 |
20120121486 | FILTER COMPRISING COMBINED SOOT OXIDATION AND NH3-SCR CATALYST - A wall-flow filter for filtering particulate matter from a flowing exhaust gas comprises a catalyst for catalysing both the conversion of solid carbon in the particulate matter by oxygen and the selective reduction of oxides of nitrogen in the exhaust gas with a nitrogenous reductant, which catalyst comprising optionally stabilised ceria and at least one metal selected from (i) tungsten and (ii) both tungsten and iron. | 05-17-2012 |
20120128557 | Three-Way Catalyst Having an Upstream Single-Layer Catalyst - Disclosed herein is a layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides being separated in a front and rear portion is disclosed. Provided is a catalytic composite material of a single front and two rear layers in conjunction with a substrate, where each of the layers includes a support, all layers comprise a platinum group metal component, and the rear bottom layer is substantially free of an oxygen storage component (OSC). | 05-24-2012 |
20120128558 | Three-Way Catalyst Having an Upstream Multi-Layer Catalyst - Disclosed herein is a layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides being separated in a front and rear portion is disclosed. Provided is a catalytic material of at least two front and two rear layers in conjunction with a substrate, where each of the layers includes a support, all layers comprise a platinum group metal component, and the rear bottom layer is substantially free of a ceria-containing oxygen storage component (OSC). | 05-24-2012 |
20120183460 | PROCESS AND APPARATUS FOR PURIFICATION OF AN EXHAUST GAS FROM AN INTERNAL COMBUSTION ENGINE - The invention provides a process for purification of an exhaust gas comprising nitrogen oxides, carbon monoxide, hydrocarbons and particulate matters from an internal combustion engine comprising the step of contacting the exhaust gas with one or more catalysts on one or more cross corrugated wire mesh sheets ( | 07-19-2012 |
20120189518 | DISORDERED MOLECULAR SIEVE SUPPORTS FOR THE SELECTIVE CATALYTIC REDUCTION OF NOx - A catalyst for selective catalytic reduction of NO | 07-26-2012 |
20120230894 | Urea-Resistant Catalytic Units And Methods of Using The Same - According to at least one aspect of the present invention, a urea-resistant catalytic unit is provided. In at least one embodiment, the catalytic unit includes a catalyst having a catalyst surface, and a urea-resistant coating in contact with at least a portion of the catalyst surface, wherein the urea-resistant coating effectively reduces urea-induced deactivation of the catalyst. In at least another embodiment, the urea-resistant coating includes at least one oxide from the group consisting of titanium oxide, tungsten oxide, zirconium oxide, molybdenum oxide, aluminum oxide, silicon dioxide, sulfur oxide, niobium oxide, molybdenum oxide, yttrium oxide, nickel oxide, cobalt oxide, and combinations thereof | 09-13-2012 |
20120251419 | EXHAUST GAS CONVERSION SYSTEM AND EXHAUST GAS CONVERSION METHOD - An exhaust gas conversion system includes an oxide catalyst, a filter, a selective catalytic reduction catalyst and an ammonia supplying device. The filter has a honeycomb structural body including a honeycomb unit. The selective catalytic reduction catalyst has a honeycomb structural body including a honeycomb unit. The oxide catalyst, the filter and the selective catalytic reduction catalyst are sequentially arranged in a direction in which an exhaust gas flows. A ratio of an area of a cross section of the selective catalytic reduction catalyst perpendicular to a longitudinal direction of the selective catalytic reduction catalyst with respect to an area of a cross section of the filter perpendicular to a longitudinal direction of the filter is approximately 0.55 or more and approximately 0.90 or less. The area of the cross section of the filter is approximately 300 cm | 10-04-2012 |
20120263633 | Metal Oxide Support Material Containing Nanoscaled Iron-Platinum Group Metal Particles - Described is a metal oxide support material nanoscaled iron-platinum group metal particles having a particle size in the range of 0.5 to 10 nm, wherein at least 70% of all nanoscaled iron-platinum group metal particles are located on an outside surface layer of the metal oxide support material, and wherein the outside surface layer has an average volume of less than 50% based on the total volume of the metal oxide support material. | 10-18-2012 |
20120275977 | CATALYSTS FOR TREATING TRANSIENT NOx EMISSIONS - A heterogeneous catalyst article having at least one combination of a first molecular sieve having a medium pore, large pore, or meso-pore crystal structure and optionally containing a first metal, and a second molecular sieve having a small pore crystal structure and optionally containing a second metal, and a monolith substrate onto or within which said catalytic component is incorporated, wherein the combination of the first and second molecular sieves is a blend, a plurality of layers, and/or a plurality of zones. | 11-01-2012 |
20120275978 | System for Reducing NOx in Exhaust - A system and method for NOx reduction is described, with a catalytic unit including a first zeolite catalyst with a first NOx conversion performance in a first temperature range and a second NOx conversion performance, lower than said first NOx conversion performance, in a second temperature range. The catalytic unit also comprises a second zeolite catalyst with a third NOx conversion performance, lower than said first NOx conversion performance, in the first temperature range and a fourth NOx conversion performance, higher than said second and third NOx conversion performances in the second temperature range, said first temperature range being higher than said second temperature range. The system further includes a controller configured to adjust an amount of reducing agent added to the NOx reducing system responsive to a temperature of the catalytic unit. | 11-01-2012 |
20120301378 | TRANSITION METAL/ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt. | 11-29-2012 |
20120301379 | TRANSITION METAL/ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Jr and Pt. | 11-29-2012 |
20120301380 | TRANSITION METAL/ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt. | 11-29-2012 |
20120301381 | TRANSITION METAL/ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt. | 11-29-2012 |
20120328499 | EXHAUST GAS PURIFICATION CATALYST APPARATUS USING SELECTIVE REDUCTION-TYPE CATALYST AND EXHAUST GAS PURIFICATION METHOD - The selective reduction-type catalyst (SROC) has a lower catalyst layer (A) and an upper catalyst layer (B) at the surface of an integral structure-type carrier (C). the lower catalyst layer (A) contains the following components (i) a noble metal component, component (ii) alumina, titania, silica, zirconia, tungsten oxide, a transition metal oxide, a rare earth oxide, and a complex oxide thereof, and component (iii) zeolite. The upper catalyst layer (B) does not substantially contain the following component (i) and contains the following component (iii). The component (i) of the lower catalyst layer (A1) of the selective reduction-type catalyst (SROC1) at the forward stage contains a platinum component of 90% by weight or more in metal equivalent. The component (i) of the lower catalyst layer (A2) of the selective reduction-type catalyst (SROC2) at the backward stage contains a palladium component of 40% or more in metal equivalent. | 12-27-2012 |
20120328500 | HIGHLY ACIDIC COMPOSITIONS COMPRISING ZIRCONIUM AND SILICON OXIDES AND AN OXIDE OF AT LEAST ONE OTHER ELEMENT SELECTED FROM AMONG TITANIUM, ALUMINUM, TUNGSTEN, MOLYBDENUM, CERIUM, IRON, TIN, ZINC, AND MANGANESE - Compositions useful for treating the exhaust gases of diesel engines contain zirconium oxide, silicon oxide and at least one oxide of at least one element M selected from among titanium, aluminum, tungsten, molybdenum, cerium, iron, tin, zinc, and manganese, in the following mass proportions of these different elements: silicon oxide: 5%-30%; M-element oxide: 1%-20%; the balance being zirconium oxide; such compositions also have an acidity, as measured by the methylbutynol test, of at least 90% and are prepared by placing a zirconium compound, a silicon compound, at least one M-element compound and a basic compound in a liquid medium, thereby generating a precipitate, maturing the precipitate in a liquid medium and separating and calcining the precipitate. | 12-27-2012 |
20130034482 | REDUCTION OF OXIDES OF NITROGEN IN A GAS STREAM USING MOLECULAR SIEVE SSZ-23 - The invention relates generally to molecular sieve SSZ-23 and its use in the reduction of oxides of nitrogen in a gas stream such as the exhaust from an internal combustion engine. | 02-07-2013 |
20130034483 | REDUCTION OF OXIDES OF NITROGEN IN A GAS STREAM USING MOLECULAR SIEVE SSZ-25 - The invention relates generally to molecular sieve SSZ-25 and its use in the reduction of oxides of nitrogen in a gas stream such as the exhaust from an internal combustion engine. | 02-07-2013 |
20130034484 | REDUCTION OF OXIDES OF NITROGEN IN A GAS STREAM USING MOLECULAR SIEVE SSZ-28 - The invention relates generally to molecular sieve SSZ-28 and its use in the reduction of oxides of nitrogen in a gas stream such as the exhaust from an internal combustion engine. | 02-07-2013 |
20130058848 | Three-Way Catalyst Having a Upstream Multi-Layer Catalyst - Disclosed herein is a layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides being separated in a front and rear portion is disclosed. Provided is a catalytic material of at least two front and two rear layers in conjunction with a substrate, where each of the layers includes a support, all layers comprise a platinum group metal component, and the rear bottom layer is substantially free of a ceria-containing oxygen storage component (OSC). | 03-07-2013 |
20130058849 | SYSTEM FOR REMEDIATING EMISSIONS AND METHOD OF USE - A method of using a hybrid oxidation catalyst system for remediating a lean emission from a vehicle includes the step of oxidizing the hydrocarbons and carbon monoxide in an engine emission comprising hydrocarbons, carbon monoxide, NO | 03-07-2013 |
20130089481 | OXIDATION CATALYST FOR INTERNAL COMBUSTION ENGINE EXHAUST GAS TREATMENT - The invention provides an exhaust gas cleaning oxidation catalyst and in particular to an oxidation catalyst for cleaning the exhaust gas discharged from internal combustion engines of compression ignition type (particularly diesel engines). The invention further relates to a catalysed substrate monolith comprising an oxidising catalyst on a substrate monolith for use in treating exhaust gas emitted from a lean-burn internal combustion engine. In particular, the invention relates to a catalysed substrate monolith comprising a first washcoat coating and a second washcoat coating, wherein the second washcoat coating is disposed in a layer above the first washcoat coating. | 04-11-2013 |
20130095013 | EXHAUST GAS PURIFICATION CATALYST APPARATUS USING SELECTIVE REDUCTION CATALYST, EXHAUST GAS PURIFICATION METHOD, AND DIESEL AUTOMOBILE MOUNTED WITH EXHAUST GAS PURIFICATION CATALYST APPARATUS - An exhaust gas purification catalyst apparatus is arranged with an oxidation catalyst (DOC) having a noble metal component for oxidizing a nitrogen oxide (NO) in exhaust gas discharged from a diesel engine, a reducing agent spraying means for supplying a reducing agent selected from an urea component or an ammonia component, and a selective reduction catalyst (SCR) for reducing the nitrogen oxide (NO | 04-18-2013 |
20130108530 | PROCESS FOR PRODUCING CERIA-ZIRCONIA-ALUMINA COMPOSITE OXIDES AND APPLICATIONS THEREOF | 05-02-2013 |
20130121902 | NOVEL MIXED OXIDE MATERIALS FOR THE SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES IN EXHAUST GASES - The invention relates to the use of mixed oxides made of cerium oxide, zirconium oxide, rare earth sesquioxide and niobium oxide as catalytically active materials for the selective catalytic reduction of nitrogen oxides with ammonia or a compound that can decompose to form ammonia in the exhaust gas of internal combustion engines in motor vehicles that are predominantly leanly operated, and to compositions or catalysts which contain said mixed oxides in combination with zeolite compounds and/or zeolite-like compounds and are suitable for the denitrogenation of lean motor vehicle exhaust gases in all essential operating states. | 05-16-2013 |
20130136677 | CATALYSTS FOR TREATING TRANSIENT NOx EMISSIONS - A heterogeneous catalyst article having at least one combination of a first molecular sieve having a medium pore, large pore, or meso-pore crystal structure and optionally containing a first metal, and a second molecular sieve having a small pore crystal structure and optionally containing a second metal, and a monolith substrate onto or within which said catalytic component is incorporated, wherein the combination of the first and second molecular sieves is a blend, a plurality of layers, and/or a plurality of zones. | 05-30-2013 |
20130142714 | DIESEL OXIDATION CATALYSTS, SYSTEMS AND METHODS OF TREATMENT - Diesel oxidation catalysts comprising a first washcoat layer including a platinum group metal impregnated on a promoted non-zeolitic support are described. The promoter is one or more of tin, manganese, indium, group VIII metals. Methods of making and using the diesel oxidation catalyst, including emissions treatment systems, are also described. | 06-06-2013 |
20130149220 | CATALYZED SUBSTRATE AND EXHAUST SYSTEM FOR INTERNAL COMBUSTION ENGINE - An exhaust system, and a catalyzed substrate for use in an exhaust system, is disclosed. The exhaust system comprises a lean NO trap and the catalyzed substrate. The catalyzed substrate has a first zone, having a platinum group metal loaded on a support, and a second zone, having copper or iron loaded on a zeolite. The first zone or second zone additionally comprises a base metal oxide or a base metal loaded on an inorganic oxide. Also provided are methods for treating an exhaust gas from an internal combustion engine using the exhaust system. The exhaust system is capable of storing NH | 06-13-2013 |
20130149221 | CATALYSED SUBSTRATE MONOLITH - A catalysed substrate monolith | 06-13-2013 |
20130149222 | EXHAUST SYSTEM FOR A LEAN-BURN IC ENGINE COMPRISING A PGM COMPONENT AND A SCR CATALYST - An exhaust system | 06-13-2013 |
20130149223 | EXHAUST SYSTEM FOR A LEAN-BURN INTERNAL COMBUSTION ENGINE INCLUDING SCR CATALYST - An exhaust system | 06-13-2013 |
20130156669 | CATALYSTS FOR NOX REDUCTION EMPLOYING H2 AND A METHOD OF REDUCING NOX - Disclosed is a catalyst composition for reducing NOx through two steps including reacting NOx with H2 thus producing ammonia which is then reacted with NOx, instead of direct NOx reduction by H2, and a method of reducing NOx using the catalyst composition. | 06-20-2013 |
20130183215 | LOW TEMPERATURE DIESEL PARTICULATE MATTER REDUCTION SYSTEM - A system for treating diesel exhaust is disclosed. The system includes a first filter including layers of filtration material positioned between layers of corrugated metallic foil. The metallic foil defines a honeycomb arrangement of longitudinal passageways from an upstream end to a downstream end and also openings for allowing exhaust to pass between adjacent longitudinal passageways of the metallic foil. The filtration material is positioned such that exhaust between the adjacent longitudinal passageways passes through the filtration material. The metallic foil also includes flow diverting structures to divert flow within the longitudinal passageways through the openings. A second filter is positioned downstream from the first filter. The second filter defines a honeycomb arrangement of longitudinal passageways. The longitudinal passages are selectively plugged adjacent upstream and downstream ends to force flow radially through walls between the longitudinal passages of the second filter. | 07-18-2013 |
20130189173 | LEAN HC CONVERSION OF TWC FOR LEAN BURN GASOLINE ENGINES - The present invention relates to a catalyst composition comprising a carrier substrate, a layer (i) coated on said carrier substrate comprising at least one precious group metal, a layer (ii) comprising Rh, and a layer (iii) comprising Pd and/or Pt and being substantially free of Ce, Ba and Rh, wherein the layer (iii) has a lower weight than the layer (i) or the layer (ii). Furthermore, the present invention relates to a method for treating an exhaust gas stream using said catalyst composition. | 07-25-2013 |
20130202507 | METHOD FOR TREATING NOX IN EXHAUST GAS AND SYSTEM THEREFORE - The present invention relates to a method for the treatment of an exhaust gas comprising NOx, wherein the method comprises the step of subjecting the exhaust gas to an exhaust gas treatment system comprising, in order of the exhaust stream: (a) a first NOx storage catalytic converter ( | 08-08-2013 |
20130202508 | EXHAUST TREATMENT SYSTEM INCLUDING A NICKEL-BASED CATALYST - A nickel-based catalyst is provided for reducing carbon monoxide, hydrocarbon emissions, and nitrogen oxides from vehicle exhausts. The catalyst is impregnated directly onto a carrier which is non-reactive with nickel. The nickel is contained on said carrier at a loading of between about 2 to about 20 wt %. When used in a vehicle exhaust gas treatment system, the catalyst provides improved efficiency in reducing CO, HC, and NO | 08-08-2013 |
20130202509 | DIESEL OXIDATION CATALYST - The present invention relates to a catalytically active material consisting of an inner core ( | 08-08-2013 |
20130209337 | NOx STORAGE COMPONENT | 08-15-2013 |
20130224090 | CATALYST FOR SELECTIVE OXIDATION OF NH3 TO N2 AND METHOD FOR PREPARING THE SAME - Disclosed is a catalyst which can convert ammonia contained in exhaust gas from an engine of a vehicle equipped with a Urea-SCR (Urea-Selective Catalytic Reduction) system, to nitrogen, and a method for preparating the same. The catalyst can convert ammonia which is failed to participate in a conversion reaction of NOx to N2 and slipped out of the SCR catalyst, to nitrogen via a SCO (Selective Catalytic Oxidation) reaction, before the ammonia is released to the air. | 08-29-2013 |
20130224091 | Low Pressure Drop Extruded Catalyst Filter - A batch composition for making a highly porous honeycomb ceramic catalytic filter article, including base inorganic components including a mixture of a nano-zeolite powder, and an inorganic filler, in amounts defined herein; and super additives including: a mixture of at least two pore formers; a binder; and a metal salt, in amounts defined herein. Also disclosed are extruded catalyst filter articles and methods for making the articles. | 08-29-2013 |
20130230441 | SELECTIVE REDUCTION CATALYST, AND EXHAUST GAS PURIFICATION DEVICE AND EXHAUST GAS PURIFICATION METHOD USING SAME - The selective reduction-type catalyst effectively purifies nitrogen oxides contained in exhaust gas from a lean-burn engine such as a boiler, a gas turbine or a lean-burn engine, a diesel engine, even under high SV, as well as having small pressure loss, by supplying by spraying urea water or ammonia water, as a reducing component, to the selective reduction-type catalyst; and an exhaust gas purification apparatus along with an exhaust gas purification method using the same. The selective reduction-type catalyst for selectively reducing a nitrogen oxide by adding urea or ammonia as a reducing agent of the nitrogen oxide to exhaust gas discharged from a lean-burn engine, characterized by coating a catalyst layer including zeolite containing at least an iron element, and a composite oxide of silica, tungsten oxide, ceria and zirconia, as denitration components, at the surface of a monolithic structure-type substrate. | 09-05-2013 |
20130251611 | PROCESS FOR THE PRODUCTION OF METAL DOPED ZEOLITES AND ZEOTYPES AND APPLICATION OF SAME TO THE CATALYTIC REMEDIATION OF NITROGEN OXIDES - The present invention is directed to a process for the production of ion-exchanged (metal-doped, metal-exchanged) Zeolites and Zeotypes, In particular, the method applied uses a sublimation step to incorporate the ion within the channels of the Zeolitic material. Hence, according to this dry procedure no solvent is involved which obviates certain drawbacks connected with wet exchange processes known in the art. | 09-26-2013 |
20130280150 | CATALYTICALLY ACTIVE PARTICULATE FILTER AND USE THEREOF - A catalytically active particulate filter is proposed which is suitable for use in an exhaust gas cleaning system for diesel engines. The particulate filter removes diesel soot particles from the exhaust gas and is also effective to oxidise carbon monoxide and hydrocarbons and to convert nitrogen monoxide at least proportionally into nitrogen dioxide. The particulate filter comprises a filter body ( | 10-24-2013 |
20130287658 | NOx TRAP COMPOSITION | 10-31-2013 |
20130287659 | COMBINED HYDROCARBON TRAP AND CATALYST - A combined hydrocarbon trap/oxidation catalyst system is provided for reducing cold-start hydrocarbon emissions. The hydrocarbon trap includes a monolithic substrate containing zeolite and a catalyst including a mixture of nickel and copper which is impregnated into or washcoated onto the substrate. The hydrocarbon trap may be positioned in the exhaust gas passage of a vehicle such that hydrocarbons are adsorbed on the trap and stored until the engine and exhaust reach a sufficient temperature for desorption and oxidation of the hydrocarbons. | 10-31-2013 |
20130287660 | THREE-WAY CATALYST HAVING AN UPSTREAM SINGLE-LAYER CATALYST - Disclosed herein is a layered three-way catalytic system being separated in a front and a rear portion having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides. Provided is a catalyst composite comprising a single front catalytic layer and two rear catalytic layers in conjunction with a substrate, where the single font layer and the rear bottom layer comprise a Pd component, the rear top layer comprises a Rh component, and the rear bottom layer is substantially free of an oxygen storage component (OSC). | 10-31-2013 |
20130294989 | NITRIC OXIDE OXIDATION OVER SILVER-BASED CATALYSTS | 11-07-2013 |
20130294990 | SILVER PROMOTED CLOSE-COUPLED NOx ABSORBER | 11-07-2013 |
20130315808 | REGENERABLE SULFUR TRAPS FOR ON-BOARD VEHICLE APPLICATIONS - Provided are improved exhaust gas cleaning systems and methods for treating exhaust gas from a combustion source that include a hydrogen generation system, a regenerable sulfur oxides trap, and a regenerable nitrogen storage reduction (NSR) catalyst trap. The improved exhaust gas cleaning systems and methods allow for the sulfur released from the sulfur trap to pass through the nitrogen oxide trap with no or little poisoning of NO | 11-28-2013 |
20130330258 | Base Metal Catalyst And Method Of Using Same - Aspects of the invention relate to a base metal catalyst composition effective to catalyze the abatement of hydrocarbons, carbon monoxide and nitrogen oxides under both rich and lean engine operating conditions comprising a support including at least 10% by weight of reducible ceria doped with up to about 60% by weight of one or more of oxides selected from the group Al, Pr, Sm, Zr, Y, Si, Ti and La; and a base metal oxide on the reducible ceria support, the base metal selected from one or more of Ni, Fe, Mn, Cu, Co, Ba, Mg, Ga, Ca, Sr, V, W, Bi and Mo, the base metal catalyst composition effective to promote a steam reforming reaction of hydrocarbons and a water gas shift reaction to provide H | 12-12-2013 |
20130330259 | METHOD AND SYSTEM USING A FILTER FOR TREATING EXHAUST GAS HAVING PARTICULATE MATTER - A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine or a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size. | 12-12-2013 |
20130336864 | Composites Of Mixed Metal Oxides For Oxygen Storage - Provided are composites of mixed metal oxides comprising: a ceria-zirconia-alumina composite, wherein the alumina is present in an amount in the range of 1 to less than 30% by weight of the composite and the mixed metal oxide composite has a ceria reducibility of at least 50% after 12 hours of hydrothermal aging at 1050° C. In preparation thereof, a ceria-zirconia solid solution can optionally further comprise at least one rare earth oxide other than ceria and the alumina may be formed by using a colloidal alumina precursor. Methods of making and using these composites are also provided. | 12-19-2013 |
20130336865 | NOx ABSORBER CATALYST | 12-19-2013 |
20130336866 | CATALYTICALLY ACTIVE MATERIAL AND CATALYTIC CONVERTER FOR THE SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES - The invention relates to a catalytically active material for reacting nitrogen oxides with ammonia in the presence of hydrocarbons. The material consists of an inner core ( | 12-19-2013 |
20140030176 | IN SITU SYNTHESIS OF COMPOSITE NANOSCALE PARTICLES - A method of making composite nanoscale particles comprising subjecting a starting material to laser energy so as to form a vapor and condensing the vapor so as to form the composite nanoscale particles, wherein said composite nanoscale particles comprise a first metal and/or a first metal oxide incorporated in nanoscale particles of an oxide of a second metal, the first metal being different than the second metal. The starting material can comprise first and second metals or compounds of the first and second metals. The composite nanoscale particles can be formed in a reaction chamber wherein a temperature gradient is provided. The atmosphere in the chamber can be an inert atmosphere comprising argon or a reactive atmosphere comprising oxygen. The composite nanoscale particles are useful for low-temperature and near-ambient temperature catalysis. The composite nanoscale particles can be incorporated in the tobacco cut filler, cigarette paper and/or cigarette filter material of a cigarette to catalyze the oxidation of carbon monoxide to carbon dioxide. | 01-30-2014 |
20140037525 | FILTER AND PROCESS OF USE TO PRODUCE CARBON NANOTUBES FROM AUTOMOTIVE EXHAUSTS - We disclose a novel filter and process that converts the wastes in automotive exhausts into carbon nanotubes. The filter surface is composed of iron of similar catalyst. The filter is placed along the pathway of exhaust streamlines preferably at an angle of more than 5°. and less than 15°. The filter is heated to temperatures in the range of 200-1000° C. The filter described in this invention can work in its own or supplement existing filtration systems. The end product of this filtration system is a material that is commercially valuable. The synthesized carbon nanotubes are purified using ionic liquid solution that is capable of removing undesirable carbonated material and leaving 95% purified carbon nanotubes. The purified carbon nanotubes have a diameter of 20-50 nm and a length of 1-10 micro meters. | 02-06-2014 |
20140044629 | METHOD FOR TREATING A GAS CONTAINING NITROGEN OXIDES (NOx) USING A COMPOSITION COMPRISING ZIRCONIUM, CERIUM AND NIOBIUM AS A CATALYST - The invention relates to a method for treating a gas containing nitrogen oxides (NOx), in which an NOx-reduction reaction is carried out using a nitrogen-containing reducing agent, which invention is characterized in that the catalyst used for the reduction reaction is a catalytic system containing a composition comprising zirconium, niobium in the following percentages by weight, expressed in terms of the weight of oxide: 10-50% of cerium, 5-20% of niobium and the remainder consisting of zirconium. | 02-13-2014 |
20140044630 | CATALYZED SUBSTRATE AND EXHAUST SYSTEM FOR INTERNAL COMBUSTION ENGINE - An exhaust system for internal combustion engines, and a catalyzed substrate for use in an exhaust system, is disclosed. The exhaust system comprises a lean NO | 02-13-2014 |
20140065043 | OXIDATION CATALYST FOR EXHAUST GAS PURIFICATION, METHOD FOR PRODUCING THE SAME, AND EXHAUST GAS PURIFICATION METHOD USING THE SAME - The purpose of the present invention is to provide an oxidation catalyst for exhaust gas purification having high durability and a method for producing the catalyst. The purpose is achieved by an oxidation catalyst for exhaust gas purification containing a refractory inorganic oxide, and a catalyst component and a metal component, which are supported on the refractory inorganic oxide, wherein the catalyst component is platinum, or platinum and palladium, and the metal component is one or more selected from the group consisting of magnesium, calcium, strontium and barium. | 03-06-2014 |
20140065044 | AMMONIA OXIDATION CATALYST, EXHAUST GAS PURIFICATION DEVICE USING SAME, AND EXHAUST GAS PURIFICATION METHOD - Ammonia oxidation catalyst being superior in heat resistance and capable of suppressing by-production of N | 03-06-2014 |
20140072493 | CATALYST FOR EXHAUST GAS PURIFICATION, METHOD FOR PRODUCING THE SAME, AND EXHAUST GAS PURIFICATION METHOD USING THE SAME - The purpose of the present invention is to provide a catalyst for exhaust gas purification, which is capable of effectively processing an exhaust gas, particularly carbon monoxide (CO) and hydrocarbon (HC) in the exhaust gas at a low temperature, and a method for producing the catalyst for exhaust gas purification. The purpose is achieved by a catalyst for exhaust gas purification, which is obtained by having a carrier that contains Al | 03-13-2014 |
20140072494 | Treatment of Cold Start Engine Exhaust - The present invention relates to a process for reducing cold start emissions in an exhaust gas stream by contacting the exhaust stream with a combination of molecular sieves comprising (1) a small pore crystalline molecular sieve or mixture of molecular sieves having pores no larger than 8 membered rings selected from the group consisting of SSZ-13, SSZ-16, SSZ-36, SSZ-39, SSZ-50, SSZ-52 and SSZ-73 and (2) a medium-large pore crystalline molecular sieve having pores at least as large as 10 membered rings selected from the group consisting of SSZ-26, SSZ-33, SSZ-64, zeolite Beta, CIT-1, CIT-6 and ITQ-4. | 03-13-2014 |
20140079611 | B-TYPE IRON SILICATE COMPOSITION AND METHOD FOR REDUCING NITROGEN OXIDES - The present invention relates to a composition including a β-type iron silicate, which includes all or part of iron in a β-type framework structure, and a solid acidic porous inorganic oxide. The present invention is characterized in that the β-type iron silicate is compounded with the porous inorganic oxide having solid acidic properties so that the solid acidic function derived from aluminum of the β-type iron silicate, is reinforced or complemented by the porous inorganic oxide, the individual particles of which are physically isolated from each other. It is preferred that the fluorine content relative to the dry weight of the β-type iron silicate is 400 ppm or less and the crystal particles of the β-type iron silicate have a truncated square bipyramidal morphology. According to the present invention, a composition that is useful as a high-performance catalyst, adsorbent, or the like, can be provided. | 03-20-2014 |
20140105799 | EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE - A method for purifying exhaust gas of an internal combustion engine, including chemically reducing NOx that is contained in the exhaust gas when a concentration of hydrocarbons flowing into an exhaust purification catalyst is made to vibrate within a predetermined range of amplitude and within a predetermined range of period, wherein, during the chemical reduction, the NOx contained in the exhaust gas is reacted with reformed hydrocarbons to produce a reducing intermediate containing nitrogen and hydrocarbons, a reducing action of the reducing intermediate chemically reduces the NOx, and the NOx is chemically reduced without storing nitrates or with storing a fine amount of the nitrates in a basic layer of the exhaust purification catalyst. | 04-17-2014 |
20140112853 | Mixed Metal 8-Ring Small Pore Molecular Sieve Catalyst Compositions, Catalytic Articles, Systems, and Methods - Described are compositions and catalytic articles comprising a copper-promoted 8-ring small pore molecular sieve and an iron-promoted 8-ring small pore molecular sieve. The catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant. | 04-24-2014 |
20140112854 | 8-Ring Small Pore Molecular Sieve as High Temperature SCR Catalyst - Described is a selective catalytic reduction catalyst comprising an iron-promoted 8-ring small pore molecular sieve. Systems and methods for using these iron-promoted 8-ring small molecular sieves as catalysts in a variety of processes such as abating pollutants in exhaust gases and conversion processes are also described. | 04-24-2014 |
20140127101 | EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE - A method for purifying exhaust gas of an internal combustion engine including flowing an exhaust gas containing NO | 05-08-2014 |
20140140911 | Oxidation Catalyst for Treating the Exhaust Gas of a Compression Ignition Engine - An exhaust system for a compression ignition engine comprising an oxidation catalyst for treating carbon monoxide (CO) and hydrocarbons (HCs) in exhaust gas from the compression ignition engine, wherein the oxidation catalyst comprises: a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component, a palladium (Pd) component and a combination thereof; an alkaline earth metal component; a support material comprising a modified alumina incorporating a heteroatom component; and a substrate, wherein the platinum group metal (PGM) component, the alkaline earth metal component and the support material are disposed on the substrate. | 05-22-2014 |
20140147358 | Oxidation Catalyst And Method For Its Preparation - Described is a process for the preparation of a catalyst. The process comprises (i) providing a substrate which is optionally coated with one or more coating layers; (ii) impregnating one or more particulate support materials with one or more platinum group elements; (iii) adding one or more alkaline earth elements and one or more solvents to the product obtained in step (ii) to obtain a slurry; (iv) adjusting the pH of the slurry obtained in step (iii) to a value ranging from 7 to 10 (v) adjusting the pH of the slurry to a value ranging from 2 to 6; (vi) optionally milling the slurry obtained in step (v); (vii) providing the slurry obtained in step (vi) onto the optionally coated substrate in one or more coating steps. Describes is as a catalyst which is obtainable according to said process and its use in the treatment of exhaust gas. | 05-29-2014 |
20140147359 | Catalysed Soot Filter for Treating the Exhaust Gas of a Compression Ignition Engine - A catalysed soot filter comprising an oxidation catalyst for treating carbon monoxide (CO) and hydrocarbons (HCs) in exhaust gas from a compression ignition engine disposed on a filtering substrate, wherein the oxidation catalyst comprises: a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component, a palladium (Pd) component and a combination thereof; an alkaline earth metal component; a support material comprising a modified alumina incorporating a heteroatom component. | 05-29-2014 |
20140154160 | BIMETALLIC CATALYST - An emission control catalyst composition comprising a supported bimetallic catalyst consisting of gold and a metal selected from the group consisting of platinum, rhodium, ruthenium, copper and nickel is disclosed. Also disclosed is a catalytic convertor comprising a substrate monolith coated with the emission control catalyst composition and a lean burn internal combustion engine exhaust gas emission treatment system comprising the catalytic convertor. A variety of processes for preparing the catalyst composition are claimed. | 06-05-2014 |
20140161695 | Diesel Oxidation Catalyst Comprising Palladium, Gold And Ceria - The present invention relates to a diesel oxidation catalyst comprising a carrier substrate, and a first washcoat layer disposed on the substrate, the first washcoat layer comprising palladium supported on a support material comprising a metal oxide, gold supported on a support material comprising a metal oxide, and a ceria comprising compound, as well as a process for the preparation of such catalyst. | 06-12-2014 |
20140170043 | Catalyst Compositions, Catalytic Articles, Systems And Processes Using Large Particle Molecular Sieves - Described are catalyst compositions, catalytic articles, methods of manufacturing catalytic articles and exhaust gas treatment systems and methods that utilize the catalytic articles. The catalytic articles include a washcoat of platinum group metal on refractory oxide support particles, and further including a molecular sieve wherein greater than 90% of the molecular sieve particles have a particle size greater than 1 μm. | 06-19-2014 |
20140170044 | Catalyst Compositions, Catalytic Articles, Systems And Processes Using Protected Molecular Sieves - Described are catalyst compositions, catalytic articles, methods of manufacturing catalytic articles and exhaust gas treatment systems and methods that utilize the catalytic articles. The catalyst composition comprises an oxidation catalyst comprising a washcoat layer including a platinum group metal supported on a refractory metal oxide support and porous molecular sieve particles having internal pores, the molecular sieve particles protected by a protecting material selected from an organic wax encapsulating the molecular sieve particles, a polymer encapsulating the molecular sieve particles, an inorganic oxide deposited on the surface of the molecular sieve particles, or an organic compound filling the internal pores of the molecular sieve particles, wherein the protecting material prevents interaction of the molecular sieve particles with the platinum group metal. | 06-19-2014 |
20140186244 | CATALYSED SUBSTRATE MONOLITH - A catalysed substrate monolith | 07-03-2014 |
20140186245 | EXHAUST SYSTEM FOR A LEAN-BURN IC ENGINE COMPRISING A PGM COMPONENT AND A SCR CATALYST - An exhaust system | 07-03-2014 |
20140205523 | Automotive Catalyst Composites Having A Two-Metal Layer - Provided are catalyst composites whose catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. The catalyst composites have a two-metal layer on a carrier, the two-metal layer comprising a rhodium component supported by a first support comprising a refractory metal oxide component or a first ceria-zirconia composite; a palladium component supported by a second support comprising a second ceria-zirconia composite; one or more of a promoter, stabilizer, or binder; wherein the amount of the total of the first and second ceria-zirconia composites in the two-metal layer is equal to or greater than the amount of the refractory metal oxide component. Methods of making and using the same are also provided. | 07-24-2014 |
20140234189 | Positive Ignition Engine and Exhaust System Comprising Three-Way Catalysed Filter - A positive ignition engine is disclosed. The engine comprises an exhaust system comprising a filter for filtering particulate matter from the emitted exhaust gas. The filter comprises a porous substrate having inlet surfaces and outlet surfaces. The porous substrate is coated at least in part with a three-way catalyst washcoat comprising a platinum group metal and a plurality of solid particles. The plurality of solid particles comprises at least one base metal oxide and at least one oxygen storage component which is a mixed oxide or composite oxide comprising cerium. The mixed oxide or composite oxide comprising cerium and/or the at least one base metal oxide has a median particle size (D50) less than 1 μm. The platinum group metal platinum and rhodium; palladium and rhodium; platinum, palladium and rhodium; palladium only; or rhodium only. A process for treating exhaust gas using the filter is also disclosed. | 08-21-2014 |
20140234190 | NOx TRAP COMPOSITION - A method to produce a NO | 08-21-2014 |
20140241964 | Oxidation Catalyst for a Combustion Engine - An oxidation catalyst for treating an exhaust gas produced by a combustion engine, wherein the oxidation catalyst comprises a substrate and a catalyst layer, wherein the catalyst layer comprises: a first support material; a first noble metal; and a second noble metal; wherein the catalyst layer is disposed on a surface of the substrate, and the catalyst layer has a non-uniform distribution of the first noble metal in a direction perpendicular to the surface of the substrate. The oxidation catalyst can be used to oxidise carbon monoxide (CO), hydrocarbons (HCs) and also oxides of nitrogen (NO | 08-28-2014 |
20140271427 | Catalyst Materials For No Oxidation - A catalyst material for the oxidation of NO comprising a catalyst carrier including a ceria-alumina support having platinum and optionally palladium dispersed on the support is described. When palladium is present, the ratio of platinum to palladium by weight is at least 1:1. The amount of ceria in the support is in the range of 1% to 12% by weight. The catalyst material is useful for methods and systems of abating pollutants from automotive exhaust gas from lean burn engines. | 09-18-2014 |
20140271428 | Catalyst Compositions, Articles, Methods And Systems - Described are catalyst compositions, catalytic articles, exhaust gas treatment systems and methods that utilize the catalytic articles. The catalyst composition comprises a washcoat including a zeolite, refractory metal oxide support particles, and a platinum group metal supported on the refractory metal oxide support particles. Greater than 90% of the refractory metal oxide particles supporting PGM have a particle size greater than 1 μm and a d | 09-18-2014 |
20140271429 | Zoned Catalyst For Diesel Applications - An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, an oxidation catalyst composite including a zoned diesel oxidation catalyst with a first washcoat zone with a Pt/Pd ratio that is less than 3:1 and a PGM loading at least twice that of a second washcoat zone. | 09-18-2014 |
20140271430 | METHOD FOR OXIDIZING CARBONACEOUS MATERIAL DIESEL PARTICULATE FILTER AND EXHAUST GAS SYSTEM - A method for oxidizing a carbonaceous material, the method comprising contacting the carbonaceous material with an effective amount of a catalytic material of formula A | 09-18-2014 |
20140271431 | METHOD FOR PURIFYING EXHAUST GAS - Provided is a method for purifying exhaust gas discharged from an internal combustion engine of a vehicle, using an exhaust gas purifying catalyst including a composite oxide represented by the following general formula AO.x(B | 09-18-2014 |
20140301926 | Systems and Methods for Diesel Oxidation Catalyst with Decreased SO3 Emissions - A diesel oxidation catalyst (DOC) catalytic converter for at least the conversion of carbon monoxide and hydrocarbons, removal of a fraction of particulate matter, and decrease of sulfur trioxide emissions within exhaust gases from an engine and consequently of sulfuric acid, is disclosed. The DOC may include any suitable configuration including at least a substrate and a washcoat, where the substrate has a plurality of channels, suitable porosity, offers a three-dimensional support for the washcoat, and is made of any suitable material. The washcoat may be deposited on the substrate by any suitable method, and may include a mixture of at least one or more carrier material oxides and one or more catalysts. Suitable materials for the carrier material oxides may include titanium dioxide, tin dioxide, and zirconium dioxide, among others, excluding aluminum oxide (Al | 10-09-2014 |
20140322114 | THREE-WAY CATALYST COMPRISING MIXTURE OF NICKEL AND COPPER - A three-way catalyst including a mixture of nickel and copper is provided for reducing carbon monoxide, hydrocarbon emissions, and nitrogen oxides from vehicle engine exhausts. The catalyst is impregnated onto a carrier substrate which is non-reactive with nickel and copper. When used in a vehicle exhaust gas treatment system, the nickel-copper catalyst provides improved efficiency in reducing CO, HC, and NO | 10-30-2014 |
20140369912 | Integrated Supports for Emission Control Catalysts - Provided is a composite of mixed metal oxides comprising by weight of the composite: alumina in an amount in the range of 1 to 50%; ceria in an amount in the range of 1 to 50% zirconia in an amount in the range of 10 to 70%; and one or more oxides of Group II elements in an amount in the range of 1 to 10%; optionally, one or more oxides Group III elements in an amount in the range of 0 to 20% is present. The mixed metal oxides may be effective integrated supports for precious metals used in emissions catalysts where a single component is an integration of alumina, ceria, zirconia, Group III metal oxides (dopants, e.g., La | 12-18-2014 |
20150010451 | CATALYTIC REDUCTION OF NOx - A system for NO | 01-08-2015 |
20150064085 | CO SLIP CATALYST AND METHOD OF USING - A CO slip catalyst, for treating an exhaust gas from a lean burn internal combustion engine, is disclosed. The CO slip catalyst comprises palladium and a ceria-containing material. The invention also includes a method for oxidizing excess CO in an exhaust gas, wherein the excess CO results from the periodic contact of an upstream catalyst under rich exhaust conditions. The method comprises contacting the excess CO in the exhaust gas with a CO slip catalyst at a temperature in the range of 100 to 700° C. | 03-05-2015 |
20150071839 | Catalyst Component of a Motor Vehicle Exhaust Gas Cleaning System and Use of a Catalyst Component - A motor vehicle emission control system includes a three zone catalytic converter component having a honeycomb support body with catalytically active coating having a precious metal content applied on the channel walls. The first coating zone extends in the longitudinal direction from the inlet-side end to a first coating boundary and has a first precious metal content. The second coating zone extends in the longitudinal direction from the first coating boundary to a second coating boundary situated downstream from the first coating boundary and has a second precious metal content that is lower than the first precious metal content. The third coating zone extends from the second coating boundary to the outlet-side end and has a third precious metal content that is lower than the second precious metal content. The coating has oxidation catalyst activity and is free of rhodium. | 03-12-2015 |
20150086456 | Mixed Metal 8-Ring Small Pore Molecular Sieve Catalyst Compositions, Catalytic Articles, Systems, and Methods - Described are compositions and catalytic articles comprising both a copper-promoted 8-ring small pore molecular sieve and an iron-promoted 8-ring small pore molecular sieve. The catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant. | 03-26-2015 |
20150093312 | WASHCOATS AND COATED SUBSTRATES FOR CATALYTIC CONVERTERS AND METHODS OF MAKING AND USING SAME - Disclosed are, inter alia, methods of forming coated substrates for use in catalytic converters, as well as washcoat compositions and methods suitable for using in preparation of the coated substrates, and the coated substrates formed thereby, which in some cases use iron-exchanged zeolite particles that provide enhanced performance such as lower light-off temperatures and lower pollutant levels in exhaust gases. The catalytic material is prepared by a plasma-based method, yielding catalytic material with a lower tendency to migrate on support at high temperatures, and thus less prone to catalyst aging after prolonged use. Also disclosed are catalytic converters using the coated substrates, which have favorable properties as compared to catalytic converters using catalysts deposited on substrates using solution chemistry. Also disclosed are exhaust treatment systems, and vehicles, such as diesel vehicles, particularly light-duty diesel vehicles, using catalytic converters and exhaust treatment systems using the coated substrates. | 04-02-2015 |
20150098879 | EXHAUST SYSTEM COMPRISING EXOTHERM-GENERATING CATALYST - An apparatus comprising a compression ignition engine and an exhaust system therefor comprising at least one exhaust system component for treating exhaust gas and means for generating an exotherm for heating the at least one exhaust system component, which exotherm generating means consisting essentially of a catalyst and means for injecting hydrocarbon into exhaust gas for combustion on the catalyst, which catalyst consisting essentially of both a palladium (Pd) component and a platinum (Pt) component, and an optional support material, disposed on a substrate monolith. | 04-09-2015 |
20150125369 | COATED PARTICLE FILTER, CATALYTIC CONVERTER AND DEVICE HAVING THE SAME - The invention relates to a coated particle filter ( | 05-07-2015 |
20150125370 | START-UP CATALYST FOR USE UPSTREAM OF A GASOLINE PARTICULATE FILTER - The present invention describes a double-layer three-way catalyst on an inert catalyst support comprising a first layer in direct contact with the inert catalyst support, comprising active alumina, a cerium/zirconium mixed oxide and palladium and a second layer applied to the first layer and in direct contact with the exhaust gas to be purified, comprising active alumina and rhodium, characterized in that the second layer is free of cerium and cerium containing materials, the use of such catalyst for cleaning the exhaust gases of a motor vehicle equipped with a gasoline engine and an exhaust gas treatment system comprising such catalyst up stream of a gasoline particulate filter (GPF). | 05-07-2015 |
20150125371 | THREE-WAY-CATALYST SYSTEM - The present invention describes a three-way-catalyst system comprising a first three-way catalyst on an inert catalyst support which is a double-layer catalyst comprising a first layer on the inert catalyst support, comprising active alumina, a cerium/zirconium mixed oxide and palladium and a second layer applied to the first layer and in direct contact with the exhaust gas to be purified, comprising active alumina and rhodium and being free of cerium and cerium containing materials and a second three-way-catalyst located upstream of the first three-way catalyst. | 05-07-2015 |
20150139874 | Lean NOx Trap Diesel Oxidation Catalyst With Hydrocarbon Storage Function - The present invention is directed to a lean NOx trap diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the trapping and reduction of nitrogen oxides (NOx). Catalytic composites can comprise a catalytic material on a carrier, the catalytic material comprising a first NOx trap layer that comprises a NOx sorbent and one or more precious metal components located on the carrier and a second NOx trap layer containing hydrocarbon trapping functionality located over the first NOx trap layer that comprises a NOx sorbent, one or more precious metal components, and a zeolite, for example a beta zeolite, wherein the zeolite is substantially free of framework aluminum. Such zeolites are characterized by high crystallinity and/or by being substantially free of framework aluminum to minimize surface acidity. | 05-21-2015 |
20150139875 | METHOD FOR PREVENTING THE CONTAMINATION BY PLATINUM OF AN SCR CATALYST - The invention relates to a method for preventing the contamination by platinum of an SCR catalyst in an exhaust-gas treatment system, said system comprising an oxidation catalyst containing platinum on the inflow side of the SCR catalyst. The outflow side of the oxidation catalyst comprises a material zone which removes traces of platinum contained in the exhaust-gas stream. | 05-21-2015 |
20150147251 | Method for Improving Lean Performance of PGM Catalyst Systems: Synergized PGM - Synergized Platinum Group Metals (SPGM) catalyst system for TWC application is disclosed. Disclosed SPGM catalyst system may include a washcoat with a Cu—Mn spinel structure and an overcoat that includes PGM supported on carrier material oxides, such as alumina. SPGM catalyst system shows significant improvement in nitrogen oxide reduction performance under stoichiometric operating conditions and especially under lean operating conditions, which allows a reduced consumption of fuel. Additionally, disclosed SPGM catalyst system also enhances the reduction of carbon monoxide and hydrocarbon within catalytic converters. Furthermore, disclosed SPGM catalyst systems are found to have enhanced catalyst activity compared to commercial PGM catalyst system, showing that there is a synergistic effect among PGM catalyst and Cu—Mn spinel within the disclosed SPGM catalyst system. | 05-28-2015 |
20150315944 | Aftertreatment System for Simultaneous Emissions Control in Stationary Rich Burn Engines - A catalyst system may include a three-way catalyst that may receive exhaust gases from an engine and convert the exhaust gases to first converted exhaust gases. An ammonia slip catalyst may receive the first converted exhaust gases and convert the first converted exhaust gases to second converted exhaust gases. A hydrocarbon oxidation catalyst may receive the second converted exhaust gases and convert the second converted exhaust gases to third converted exhaust gases. | 11-05-2015 |
20150321181 | Catalyst Assembly For Treating Engine Exhaust - A method for treating engine exhaust. The method includes contacting an NOx exhaust with an upstream catalyst material coated onto a substrate and including copper or iron loaded in a first zeolite at an upstream loading of 0 to 3.5 g/l to convert the NOx exhaust in a first temperature range of 150° C. to 500° C. to a first NOx converted exhaust. The method further includes contacting the first NOx converted exhaust with a downstream catalyst material coated onto the substrate downstream of the upstream catalyst material and including copper or iron loaded in a second zeolite at a downstream loading of 1.5 to 9.5 g/l to convert the first NOx converted exhaust in a second temperature range of 450° C. to 700° C. | 11-12-2015 |
20150352493 | Catalytic Articles Containing Platinum Group Metals And Non-Platinum Group Metals And Methods Of Making And Using Same - Aspects of the invention pertain to catalytic articles and methods of making catalytic articles comprising a first catalytic coating comprising a platinum group metal, wherein the first catalytic coating is substantially free of Cu, Ni, Fe, Mn, V, Co, Ga, Mo, Mg, Cr and Zn; a second catalytic coating comprising a non-PGM metal, wherein the second catalytic coating is substantially free of any platinum group metal; and one or more substrates, wherein the first catalytic coating is separated from the second catalytic coating, optionally with a barrier layer. | 12-10-2015 |
20150352495 | CATALYST AND METHOD FOR THE REDUCTION OF NITROGEN OXIDES - The present invention relates to a nitrogen oxide storage catalyst composed of at least two catalytically active washcoat layers on a support body, wherein a lower washcoat layer A contains cerium oxide, an alkaline earth metal compound and/or an alkali metal compound, and also platinum, and an upper washcoat layer B disposed atop the washcoat layer A, containing cerium oxide, and also platinum and palladium, and no alkaline earth metal compound, and a method for converting NO | 12-10-2015 |
20150353367 | PROCESSES USING MOLECULAR SIEVE SSZ-99 - This disclosure is directed to uses for a new crystalline molecular sieve designated SSZ-99. SSZ-99 is synthesized using a methylethyldiisopropylammonium cation as a structure directing agent. | 12-10-2015 |
20150353368 | PROCESSES USING MOLECULAR SIEVE SSZ-100 - This disclosure is directed to uses for a new crystalline molecular sieve designated SSZ-100. SSZ-100 is synthesized using a cationic nitrogen-containing organic compound having the following structure: | 12-10-2015 |
20150360207 | CATALYST MANUFACTURING METHOD - A method for producing a catalyst using an additive layer method includes:
| 12-17-2015 |
20150367328 | EXHAUST GAS PURIFICATION CATALYST AND EXHAUST GAS PURIFICATION METHOD USING SAID CATALYST - As a way to suppress deterioration of catalytic performance in an exhaust gas purification catalyst even after being exposed to an exhaust gas containing a phosphorus compound, an exhaust gas purification catalyst is provided. The catalyst purifies an exhaust gas containing a phosphorus compound, and the catalyst includes a catalyst layer containing rhodium (Rh), palladium (Pd), and either a ceria-zirconia-lanthana complex oxide or a ceria-zirconia-lanthana-yttria complex oxide as catalyst active components. Further, an average value of distances between Rh particles and the nearest Pd particles of the Rh and the Pd is within 4000 nm, a weight ratio of the Pd to the Rh is from 0.2 to 4.9, and a content rate of yttria in the ceria-zirconia-lanthana-yttria complex oxide is 19% by weight or less. | 12-24-2015 |
20160001228 | PEROVSKITE WITH AN OVLERLAYER SCR COMPONENT AS AN AMMONIA OXIDATION CATALYST AND A SYSTEM FOR EXHAUST EMISSION CONTROL ON DIESEL ENGINES - An ammonia slip control catalyst having a layer containing perovskite and a separate layer containing an SCR catalyst is described. The ammonia slip catalyst can have two stacked layers, with the top overlayer containing an SCR catalyst, and the bottom layer containing a perovskite. The ammonia slip catalyst can alternatively be arranged in sequential layers, with the SCR catalyst being upstream in the flow of exhaust gas relative to the perovskite. A system comprising the ammonia slip catalyst upstream of a PGM-containing ammonia oxidation catalyst and methods of using the system are described. The system allows for high ammonia oxidation with good nitrogen selectivity. Methods of making and using the ammonia slip catalyst to reduce ammonia slip and selectively convert ammonia to N | 01-07-2016 |
20160001273 | PROCESSES USING MOLECULAR SIEVE SSZ-98 - Uses for a new crystalline molecular sieve designated SSZ-98 are disclosed. SSZ-98 has the ERI framework type and is synthesized using a N,N′-dimethyl-1,4-diazabicyclo[2.2.2]octane dication as a structure directing agent. | 01-07-2016 |
20160038878 | Zoned Catalyst for Treating Exhaust Gas - Provided is a system for treating an exhaust gas comprising a first SCR catalyst zone comprising an iron loaded medium- or large-pore molecular sieve having a first ammonia storage capacity; and a second SCR catalyst zone comprising a copper loaded small-pore molecular sieve having a second ammonia storage capacity, wherein the first SCR catalyst zone is disposed upstream of the second SCR catalyst zone with respect to normal exhaust gas flow through the system and wherein the second ammonia storage capacity is greater than the first ammonia storage capacity. Also provided is a method for using the system to treat exhaust gas. | 02-11-2016 |
20160067691 | PROCESSES USING MOLECULAR SIEVE SSZ-101 - This disclosure is directed to uses for a new crystalline molecular sieve designated SSZ-101. SSZ-101 is synthesized using a N-cyclohexylmethyl-N-ethylpiperidinium cation as a structure directing agent. | 03-10-2016 |
20160121307 | METAL TUNGSTATES FOR USE AS NITROGEN OXIDES REDUCTION CATALYSTS - A nitrogen oxide (NOx) reduction catalyst that includes a transition metal tungstate having the formula: MWO | 05-05-2016 |
20160129430 | OXIDATION CATALYST FOR EXHAUST GAS PURIFICATION, METHOD FOR PRODUCING THE SAME, AND EXHAUST GAS PURIFICATION METHOD USING THE SAME - The purpose of the present invention is to provide an oxidation catalyst for exhaust gas purification having high durability and a method for producing the catalyst. The purpose is achieved by an oxidation catalyst for exhaust gas purification containing a refractory inorganic oxide, and a catalyst component and a metal component, which are supported on the refractory inorganic oxide, wherein the catalyst component is platinum, or platinum and palladium, and the metal component is one or more selected from the group consisting of magnesium, calcium, strontium and barium. | 05-12-2016 |
20160136617 | Synergized PGM Catalyst with Low PGM Loading and High Sulfur Resistance for Diesel Oxidation Application - Sulfur-resistant SPGM catalysts with significant oxidation capabilities are disclosed. Catalytic layers of SPGM samples may be prepared using incipient wetness and metallizing techniques to structure a washcoat layer of ZPGM material of YMnO | 05-19-2016 |
20160136618 | Sulfur-Resistant Synergized PGM Catalysts for Diesel Oxidation Application - Sulfur-resistant SPGM catalysts with significant oxidation capabilities are disclosed. A plurality of catalyst samples may be prepared including ZPGM material compositions of YMnO | 05-19-2016 |
20160136621 | Bimetallic Synergized PGM Catalyst Systems for TWC Application - Bimetallic Synergized Platinum Group Metals (SPGM) catalyst systems for TWC application are disclosed. Disclosed bimetallic SPGM catalyst systems may include a washcoat with a Cu—Mn spinel structure and an overcoat that includes PGMs, such as Pd/Rh or Pt/Rh supported on carrier material oxides, such as alumina. Bimetallic SPGM catalyst systems show significant improvement in nitrogen oxide reduction performance under lean operating conditions, which allows a reduced consumption of fuel. Additionally, disclosed bimetallic SPGM catalyst systems exhibit enhanced catalytic activity for carbon monoxide conversion. Furthermore, bimetallic SPGM catalyst systems are found to have enhanced catalytic activity for fresh, hydrothermally aged and fuel cut aged conditions compared to PGM catalyst system, showing that there is a synergistic effect between PGM catalyst and Cu—Mn spinel within the disclosed SPGM catalyst system which help in performance and thermal stability of disclosed SPGM catalyst systems. | 05-19-2016 |
20160166988 | HIGHLY ACIDIC COMPOSITIONS COMPRISING ZIRCONIUM AND SILICON OXIDES AND AN OXIDE OF AT LEAST ONE OTHER ELEMENT SELECTED FROM AMONG TITANIUM, ALUMINUM, TUNGSTEN, MOLYBDENUM, CERIUM, IRON, TIN, ZINC, AND MANGANESE | 06-16-2016 |
20160166989 | METHOD FOR PURIFYING EXHAUST GAS | 06-16-2016 |
20160177794 | METHOD FOR REMOVING SOOT FROM EXHAUST GASES | 06-23-2016 |
20160184803 | CATALYST FOR NITROGEN OXIDE REMOVAL - An exhaust gas purification method by which carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxide (NOx), particularly NOx, which are hazardous components contained in an exhaust gas can be removed efficiently. The disclosure relates to a catalyst for exhaust gas purification including: a three-dimensional structure; and a catalyst component layer composed of one or more constituting layers on the three-dimensional structure, wherein the catalyst component layer contains (a) a noble metal-unsupported alumina having mesopores, (b) NOx storage material-supported cerium, (c) a refractory inorganic oxide, and (d) a noble metal, and the constituting layer of the uppermost surface among the one or more constituting layers contains (a) the noble metal-unsupported alumina and (b) the NOx storage material-supported cerium, a method for producing the same, and an exhaust gas purification method using the catalyst. | 06-30-2016 |
20170232387 | PEROVSKITE BASED OXYGEN STORAGE MATERIALS | 08-17-2017 |
20180021756 | PLATINUM GROUP METAL (PGM) CATALYSTS FOR AUTOMOTIVE EMISSIONS TREATMENT | 01-25-2018 |
20180021757 | RHODIUM-CONTAINING CATALYSTS FOR AUTOMOTIVE EMISSIONS TREATMENT | 01-25-2018 |
20190143311 | CATALYST FOR LEAN BURN | 05-16-2019 |