Class / Patent application number | Description | Number of patent applications / Date published |
585643000 | By alkyl transfer, e.g., disproportionation, etc. | 32 |
20080200745 | Method For Producing Propene From 2-Butene And Isobutene-Rich Feeding Flows - Process for preparing
| 08-21-2008 |
20090005625 | SYSTEM AND PROCESS FOR ALKYLATION - A method for alkylating a hydrocarbon comprising at least one isoparaffin and at least one olefin by introducing liquid acid catalyst and the hydrocarbon into a high shear reactor, forming an emulsion comprising droplets comprising hydrocarbon in a continuous acid phase, wherein the droplets have a mean diameter of less than about 5 μm, introducing the emulsion into a vessel operating under suitable alkylation conditions whereby at least a portion of the isoparaffin is alkylated with the olefin to form alkylate, and removing a product stream comprising alkylate from the vessel. A system for carrying out the method is also disclosed. | 01-01-2009 |
20120004490 | METHOD FOR PRODUCING PROPYLENE - The present invention provides in a method for producing propylene from a hydrocarbon raw material containing ethylene in an amount exceeding 50% by mass under the co-existence of water, a method for producing propylene stably over a long term from ethylene in a high yield and with the reaction/regeneration repeated. A method for producing propylene includes a step for catalytically converting a hydrocarbon raw material containing ethylene in an amount exceeding 50% by mass with a zeolite-containing catalyst while supplying water, wherein a zeolite contained in the zeolite-containing catalyst satisfies (1) to (3) shown below;
| 01-05-2012 |
20120165590 | PROCESS FOR PREPARING AN ALKYLATE - The present invention provides process for preparing an alkylate comprising contacting in a reaction zone a hydro-carbon mixture comprising at least an isoparaffin and an olefin with an acidic ionic liquid catalyst under alkylation conditions to obtain an alkylate-comprising effluent, in which process: solids are formed in the reaction zone; a solids-comprising effluent comprising hydrocarbons and acidic ionic liquid is withdrawn from the reaction zone; and at least part of the solids-comprising effluent is treated to remove at least part of the solids to obtain a solids-depleted effluent. The invention further provides a process for treating an acidic ionic liquid comprising at least 0.1 wt % of solids based on the total weight of the acidic ionic liquid, wherein at least part of the solids are removed. | 06-28-2012 |
20120203048 | METHOD FOR MANUFACTURING CATALYST - A method for manufacturing a catalyst, which comprises regenerating a catalyst comprising a zeolite as an active ingredient and having an ethylene conversion lowered through reaction of producing propylene by bringing into contact with ethylene in a vapor phase, by bringing the catalyst into contact with a gas which does not comprise oxygen and comprises hydrogen having a hydrogen partial pressure of 0.01 MPa or more as an absolute pressure thereof. | 08-09-2012 |
20120232321 | METHOD FOR SYNTHESIS OF 1-DECENE OLIGOMER - A method for synthesis of 1-decene oligomer is provided, wherein 1-decene is polymerized at 80-120° C., 0.8-1.4 MPa in the presence of aluminum trichloride catalyst supported on gamma-alumina and n-hexane solvent where the volume ratio of 1-decene to n-hexane is 3:8-4:1. The catalyst is treated as follows: impregnating gamma-alumina carrier in 0.5-2.0 mol of hydrochloric acid, sulfuric acid, nitric acid or mixtures thereof, then vacuum drying at 80-100° C. and calcining at 400-800° C.; dissolving 5-10 g of anhydrous aluminum trichloride in 100 ml of tetrachloromethane, trichloromethane or dichloromethane solvent; adding the obtained solution into 10-20 g of activated alumina carrier and obtaining the catalyst after vacuum drying. The conversion rate of 1-decene is 50 wt % or more. The oligomer has a kinematic viscosity at 40° C. of 6.0-25 mm2/s and a viscosity index of 160-262. | 09-13-2012 |
20130066130 | IONIC LIQUID CATALYZED ALKYLATION PROCESSES & SYSTEMS - Ionic liquid alkylation processes may comprise contacting at least one hydrocarbon stream with an ionic liquid catalyst in an ionic liquid alkylation zone under ionic liquid alkylation conditions, cooling at least one of a reactor effluent and a hydrocarbon phase of the reactor effluent, and recycling the cooled reactor effluent or cooled hydrocarbon phase to the ionic liquid alkylation zone. Ionic liquid alkylation systems for performing ionic liquid catalyzed alkylation processes are also disclosed. | 03-14-2013 |
20140094634 | DEVICE FOR DISTRIBUTING FEED AND RECOVERING EFFLUENS IN A RADIAL BED CATALYTIC REACTOR - The invention describes a radial bed catalytic conversion unit having an outer cylindrical chamber ( | 04-03-2014 |
20140357922 | OLEFIN METATHESIS PROCESS USING A CATALYST CONTAINING TUNGSTEN FLUORINE BONDS - A process for the metathesis of olefins has been developed. The process comprises contacting a hydrocarbon feedstock with a catalyst at metathesis conditions. The catalyst comprises a tungsten compound, which contains at least one tungsten-fluoro bond, dispersed or grafted onto a support. A specific example of the catalyst is the compound WOF(CH | 12-04-2014 |
20160136602 | COLLECTOR PIPE FOR A RADIAL REACTOR COMPRISING SOLID FILLETS - This invention relates to a collector pipe ( | 05-19-2016 |
20160136605 | COLLECTOR PIPE FOR A RADIAL-BED REACTOR - This invention relates to a collector pipe ( | 05-19-2016 |
585644000 | Plural stage or averaging | 3 |
20140179973 | METHOD OF OLEFIN METATHESIS USING A CATALYST BASED ON A SPHERICAL MATERIAL COMPRISING OXIDISED METAL PARTICLES TRAPPED IN A MESOSTRUCTURED MATRIX - A process for metathesis of olefins, bringing olefins into contact with a catalyst activated by heating to a temperature in the range 100° C. to 1000° C. in an atmosphere of non-reducing gas, the catalyst containing at least one inorganic material having at least two elementary spherical particles, each of which are metal oxide particles with a size of at most 300 nm and containing at least one of tungsten, molybdenum, rhenium, cobalt, tin, ruthenium, iron or titanium, alone or a mixture, the metal oxide particles being present within a mesostructured matrix of an oxide of at least one element Y: silicon, aluminium, titanium, tungsten, zirconium, gallium, germanium, tin, antimony, lead, vanadium, iron, manganese, hafnium, niobium, tantalum, yttrium, cerium, gadolinium, europium or neodymium or a mixture thereof, the matrix having pore size 1.5 to 50 nm and amorphous walls with thickness 1 to 30 nm and maximum diameter of 200 μm. | 06-26-2014 |
20160075617 | SUPPORTED METAL OXIDES FOR OLEFIN METATHESIS AND RELATED METHODS - A method is provided comprising exposing a supported heterogeneous metathesis catalyst to an olefin compound for an activation time at an activation temperature; exposing the activated supported heterogeneous metathesis catalyst to a reactant capable of undergoing a metathesis reaction for a reaction time at a reaction temperature to produce metathesis products; and exposing the deactivated supported heterogeneous metathesis catalyst to a regenerating compound for a regeneration time at a regeneration temperature. The activity of the regenerated supported heterogeneous metathesis catalyst may be substantially the same or greater than the activity of the activated supported heterogeneous metathesis catalyst prior to deactivation. The activation temperature may be greater than the reaction temperature. The regenerating compound may be a second olefin compound or an inert gas. | 03-17-2016 |
20160167003 | Improved Catalyst Bed Configuration for Olefin Production | 06-16-2016 |
585645000 | Using organic extraneous agent | 5 |
20130289327 | SYNTHESIS OF TERMINAL ALKENES FROM INTERNAL ALKENES AND ETHYLENE VIA OLEFIN METATHESIS - This invention relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by a selected olefin metathesis catalyst. In one embodiment of the invention, for example, a method is provided for synthesizing a terminal olefin, the method comprising contacting an olefinic substrate comprised of at least one internal olefin with ethylene, in the presence of a metathesis catalyst, wherein the catalyst is present in an amount that is less than about 1000 ppm relative to the olefinic substrate, and wherein the metathesis catalyst has the structure of formula (II) | 10-31-2013 |
20130331630 | METHODS FOR SUPPRESSING DEHYDROGENATION - A method for suppressing dehydrogenation includes reacting an optionally functionalized olefin reactant in a metathesis reaction to form an olefin metathesis product; and providing a dehydrogenation suppression agent in admixture with (a) the olefin metathesis product and/or the optionally functionalized olefin reactant, and (b) a metal-containing material selected from the group consisting of residual metathesis catalyst, a hydrogen transfer agent, and a combination thereof, under conditions that are sufficient to passivate at least a portion of the metal-containing material. Methods of refining natural oils and methods of producing fuel compositions are also described. | 12-12-2013 |
20140200382 | SYNTHESIS OF TERMINAL ALKENES FROM INTERNAL ALKENES AND ETHYLENE VIA OLEFIN METATHESIS - This invention relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by a selected olefin metathesis catalyst. In one embodiment of the invention, for example, a method is provided for synthesizing a terminal olefin, the method comprising contacting an olefinic substrate comprised of at least one internal olefin with ethylene, in the presence of a metathesis catalyst, wherein the catalyst is present in an amount that is less than about 1000 ppm relative to the olefinic substrate, and wherein the metathesis catalyst has the structure of formula (II) | 07-17-2014 |
20140235913 | PROCESS FOR METATHESIS OF OLEFINS OBTAINED FROM FISCHER-TROPSCH FRACTIONS USING A RUTHENIUM COMPLEX COMPRISING A SYMMETRIC N-HETEROCYCLIC DIAMINOCARBENE - This invention describes a process for metathesis of olefins from feedstocks obtained from the Fischer-Tropsch process, using as catalyst a ruthenium indenylidene complex comprising a saturated or unsaturated, symmetric N-heterocyclic carbene. | 08-21-2014 |
20160122375 | IMMOBILIZED METATHESIS TUNGSTEN CATALYSTS AND USE THEREOF IN OLEFIN METATHESIS - Compound of formula (I) wherein M is W; R | 05-05-2016 |
585646000 | Using catalyst containing Mo, Re, or W and another transition metal | 11 |
20090203950 | Metathesis process using a fluidized bed reactor - A method for metathesizing at least two olefins using a fluidized bed metathesis reactor and a finely subdivided solid catalyst. | 08-13-2009 |
20090281364 | Metathesis process using a moving phase reactor - A method for metathesizing at least two gaseous olefins using a moving catalyst bed gas phase metathesis reactor and counter current flowing subdivided solid catalyst. | 11-12-2009 |
20100030003 | PROCESS FOR MANUFACTURING NEOHEXENE - The present invention relates to a process for manufacturing neohexene, comprising contacting isobutene with a supported catalyst comprising a tungsten compound chosen from tungsten hydrides, organometallic tungsten compounds and organometallic tungsten hydrides, and a support comprising an oxide of aluminium, so as to form a reaction mixture comprising neohexene, and preferably separating neohexene from the reaction mixture, so as to isolate it. The contacting leads to the direct production of neohexene, in particular in a single (reaction) stage and with a high molar selectivity for neohexene. The contacting can be performed at a temperature of 50 to 600° C., under a total absolute pressure of 0.01 to 100 MPa. | 02-04-2010 |
20100056839 | OLEFIN ISOMERIZATION AND METATHESIS CATALYST - A process for the production of propylene, the process including: contacting ethylene and a hydrocarbon stream comprising 1-butene and 2-butene with a bifunctional isomerization-metathesis catalyst to concurrently isomerizes 1-butene to 2-butene and to form a metathesis product comprising propylene; wherein the bifunctional isomerization-metathesis catalyst comprises: a catalyst compound may include at least one element selected from tungsten, tantalum, niobium, molybdenum, nickel, palladium, osmium, iridium, rhodium, vanadium, ruthenium, and rhenium for providing metathesis activity on a support comprising at least one element from Group IA, IIA, IIB, and IIIA of the Periodic Table of the Elements; wherein an exposed surface area of the support provides both isomerization activity for the isomerization of 1-butene to 2-butene; and reactive sites for the adsorption of catalyst compound poisons. In other embodiments, the catalyst compound may include at least one element selected from aluminum, gallium, iridium, iron, molybdenum, nickel, niobium, osmium, palladium, phosphorus, rhenium, rhodium, ruthenium, tantalum, titanium, tungsten, and vanadium. | 03-04-2010 |
20100063339 | PROCESS FOR PRODUCING OLEFINS - In a process for producing olefins by a metathesis reaction comprising feeding an olefin gas to pass the olefin through a catalyst bed in the presence of hydrogen gas to convert the olefin into another kind of olefin, the catalyst bed having a catalyst including at least one metal selected from the group consisting of tungsten, molybdenum, rhenium, niobium, tantalum and vanadium, and a co-catalyst including a basic compound having at least one metal selected from the group consisting of Group Ia (alkali metals), Group IIa (alkaline earth metals), Group IIb and Group IIIa of the periodic table, the improvement lies in controlling the superficial velocity of the gas passing through the catalyst bed to 0.01 to 2.0 m/sec. According to the present invention, the presence of hydrogen gas dramatically increases the durability of the metathesis catalytic activity and the by-production of paraffins is suppressed. | 03-11-2010 |
20100145126 | Process of Producing Olefins - A process of producing olefins by a metathesis reaction in a practical low temperature range by improving the reactivity of the catalyst is provided. | 06-10-2010 |
20110196184 | Support Properties of Silica Supported Catalysts and Their Use in Olefin Metathesis - Silica supports having a surface area from about 250 m | 08-11-2011 |
20110196185 | Acid Washed Silica Supported Catalysts and Their Use in Olefin Metathesis - Acid washing of silica supports, used for supported tungsten catalysts, improves the activity of the resulting catalyst (i.e., its conversion level at a given temperature) for the metathesis of olefins, without compromising its selectivity to the desired conversion product(s). Exemplary catalysts and processes include those for the production of valuable light olefins such as propylene from a hydrocarbon feedstock comprising ethylene and butylene. | 08-11-2011 |
20120264990 | OLEFIN METATHESIS PROCESS USING A TREATED TUNGSTEN OXIDE CATALYST - A process for olefin metathesis is disclosed. The process involves contacting a feedstock comprising a first olefin and a second olefin having a carbon number at least two greater than that of the first olefin with a catalyst comprising a tungsten component on a refractory oxide support, e.g. silica at metathesis conditions to provide a product olefin having an intermediate carbon number between that of the first and second olefin. The catalyst is characterized in that it is first pretreated with hydrogen followed by treatment with ethylene. | 10-18-2012 |
20140046110 | ISOMERIZATION OF LIGHT ALPHA-OLEFINS TO LIGHT INTERNAL OLEFINS - The present invention relates to a process for isomerizing linear alpha-olefins having from 4 to 8 carbon atoms over a heterogeneous catalyst, wherein the catalyst comprises a hydrogenation metal and a selectivity promoter selected from among selenium and tellurium on a support, and also a process for preparing 1-olefins by a metathesis reaction of 2-olefins with ethene, wherein the 2-olefins are prepared by the above mentioned isomerization process. | 02-13-2014 |
20140235914 | Eggshell Catalyst Composites Containing Tungsten Oxide or Tungsten Oxide Hydrate - Provided are catalyst composites useful for the production of olefins during a metathesis reaction, as well as methods of making and using the same. Certain methods comprise a support comprising at least about 90% by weight silica; and an eggshell layer on the support comprising about 0.25 to about 10 wt. % tungsten in the form of tungsten oxide or tungsten oxide hydrate, based on the total weight of the catalyst composite. | 08-21-2014 |
585647000 | Using Re-containing catalyst | 2 |
20100191030 | METHOD FOR REACTIVATING METATHESIS CATALYSTS, AND OLEFIN PRODUCTION PROCESS INCLUDING REACTIVATING STEP - A metathesis catalyst which is a combination including a catalyst | 07-29-2010 |
20130150643 | MIXED-PHASE OPERATION OF BUTENES METATHESIS PROCESS FOR MAXIMIZING PROPYLENE PRODUCTION - Methods for olefin metathesis including contacting a olefin feed stream with a metathesis catalyst at a temperature and at a pressure sufficient to maintain the reactor olefin compositions in a mixed-phase condition including components in the liquid phase and components in the vapor phase, where the mixed-phase reaction conditions shift the equilibrium to desired product olefins. | 06-13-2013 |