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| Number | Title | Issue Date |
| 8163941 | Method for production of optically active epoxy compound, and complex used therefor and process for producing the same There is provided a method for industrially producing optically active epoxy compounds by asymmetrically epoxidizing prochiral unsaturated compounds with an oxidant using as a catalyst a single substance or a di-μ-oxo dimer derived therefrom represented by any of t... | 04/24/2012 |
| 8148555 | Method for improving the selectivity of a catalyst and a process for the epoxidation of an olefin A method for improving the selectivity of a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.17 g per m2 surface area of the support, which method comprises contacting the cata... | 04/03/2012 |
| 7932408 | Catalyst with bimodal pore size distribution and the use thereof The invention is directed to a catalyst for the epoxidation of an olefin to an olefin oxide, the catalyst comprising a support having at least two pore size distributions, each pore size distribution possessing a different mean pore size and a different pore size of... | 04/26/2011 |
| 7932407 | Olefin epoxidation process and a catalyst for use in the process A process for the epoxidation of an olefin, which process comprises reacting a feed comprising an olefin, oxygen and an organic halide, in the presence of a catalyst comprising silver and rhenium deposited on a carrier, wherein the catalyst comprises rhenium in a qu... | 04/26/2011 |
| 7803957 | Ethylene oxide production using fixed moderator concentration A method for controlling ethylene oxidation uses ethylene and oxygen, in conjunction with a silver based catalyst, a moderator and a co-moderator, to form ethylene oxide. When controlling the ethylene oxidation reaction, the moderator concentration is maintained con... | 09/28/2010 |
| 7714152 | Carrier for olefin oxide catalyst A carrier for a catalyst useful for the epoxidation of an olefin which comprises an inert, refractory solid carrier is provided. The carrier has no or little absolute volume from small pores, of less than 1 micrometer, and large pores, of above 5 micrometer. By “n... | 05/11/2010 |
| 7553980 | Process for initiating a highly selective ethylene oxide catalyst A process for initiating a highly selective ethylene oxide catalyst is provided in which the highly selective ethylene oxide catalyst is operated first as a ‘standard’ Ag-based catalyst (e.g., a catalyst that contains only silver and alkali metal, especially ces... | 06/30/2009 |
| 7528270 | Process for the production of an olefin oxide, a 1, 2-diol, a 1,2-diol ether, or an alkanolamine A process is provided for the epoxidation of an olefin comprising the steps of: contacting a feed comprising an olefin and oxygen with a catalyst comprising a silver component and a high-selectivity dopant deposited on a fluoride-mineralized carrier; and producing a... | 05/05/2009 |
| 7507845 | Process for production of an olefin oxide The invention relates to a process for the epoxidation of an olefin, wherein the concentration of the olefin oxide in the outlet is greater than about 2.2% by volume. More particularly, the invention relates to a process for the epoxidation of ethylene by contacting... | 03/24/2009 |
| 7479565 | Process for the production of an olefin oxide, a 1,2-diol, a 1,2-diol ether, or an alkanolamine A process is provided for the epoxidation of an olefin comprising the steps of: contacting a feed comprising an olefin and oxygen with a catalyst comprising a silver component deposited on a fluoride-mineralized carrier; and producing a product mix comprising an ole... | 01/20/2009 |
| 7381675 | Direct epoxidation catalyst A catalyst comprising a noble metal supported on a diatomaceous earth and a transition metal zeolite is disclosed. The catalyst is used in an epoxidation process comprising reacting an olefin, hydrogen, and oxygen. The diatomaceous earth is readily available and may... | 06/03/2008 |
| 7365217 | Oxidation process A process is disclosed for reacting an olefin, hydrogen, and oxygen in a reactor in the presence of an epoxidation catalyst comprising a transition metal zeolite and a noble metal to produce a product stream comprising an epoxide and an alkane. The alkane is separat... | 04/29/2008 |
| 7361625 | Photocatalyst producing method, photocatalyst, and gas purifier A carrier supporting titania thereon is further caused to carry a metal compound thereon. This metal compound is hydrogen reduced in a heating atmosphere at a first treatment temperature, then oxidized in a heating atmosphere at a second treatment temperature not hi... | 04/22/2008 |
| 7348444 | Process for the production of an olefin oxide A process for the production of an olefin oxide, which process comprises reacting a feed comprising an olefin and oxygen in the presence of a silver-containing catalyst, wherein before the catalyst has reached an advanced stage of ageing the reaction temperature is ... | 03/25/2008 |
| 7341977 | Method of sorbing sulfur compounds using nanocrystalline mesoporous metal oxides Compounds and methods for sorbing organosulfur compounds from fluids are provided. Generally, compounds according to the present invention comprise mesoporous, nanocrystalline metal oxides. Preferred metal oxide compounds either exhibit soft Lewis acid properties or... | 03/11/2008 |
| 7319156 | Process for producing olefin oxide There is disclosed a process for producing an olefin oxide, which is characterized by reacting an olefin with oxygen in the presence of a silver catalyst and 0.2 mole or more of water per mol of the olefin. ... | 01/15/2008 |
| 7273826 | Epoxidation catalyst The invention is a catalyst comprising a titanium or vanadium zeolite, a binder, and zinc oxide, wherein the catalyst is preparing an aqueous mixture of the zeolite, a binder source, and a zinc oxide source, and subjecting the mixture to rapid drying. The catalyst i... | 09/25/2007 |
| 7259129 | Silver-containing catalysts, the manufacture of such silver-containing catalysts, and the use thereof A high activity and high selectivity silver catalyst comprising silver and, optionally, one or more promoters supported on a suitable support material having the form of a shaped agglomerate. The structure of the shaped agglomerate is that of a hollow cylinder havin... | 08/21/2007 |
| 7247600 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 07/24/2007 |
| 7238817 | Direct epoxidation process A process is disclosed for reacting an olefin, hydrogen, and oxygen in a reactor in the presence of a catalyst comprising a transition metal zeolite and a noble metal to produce a reaction mixture comprising an epoxide and acidic byproducts. A portion of the reactio... | 07/03/2007 |
| 7235677 | Method of improving the operation of an existing ethylene oxide manufacturing process and system Described is a method of improving the process and operation of an existing system for manufacturing ethylene oxide. The ethylene oxide manufacturing system includes an epoxidation reactor system containing a volume of high activity epoxidation catalyst. The method ... | 06/26/2007 |
| 7232786 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 06/19/2007 |
| 7232918 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 06/19/2007 |
| 7193094 | Process and systems for the epoxidation of an olefin A process for the epoxidation of an olefin, which process comprises reacting a feed comprising the olefin, oxygen and a reaction modifier in the presence of a highly selective silver-based catalyst at a reaction temperature T, and with the reaction modifier being pr... | 03/20/2007 |
| 7153987 | Process for making silver based epoxidation catalysts and process for preparing an olefin oxide The invention relates to a process for preparing a catalyst which involves (a) preparing a paste having a uniform mixture of at least one alkaline earth metal carbonate; a liquid medium; a silver bonding additive; and, at least one extrusion aid and/or optionally a ... | 12/26/2006 |
| 7122491 | Method of increasing the lifetime of a hydro-oxidation catalyst A method of increasing the lifetime of a hydro-oxidation catalyst comprising, preferably, gold, silver, or mixtures thereof, and optionally one or more promoters, on a titanium-containing support, such as a titanosilicate or titanium dispersed on silica. The method ... | 10/17/2006 |
| 7102022 | Method for the start-up of an epoxidation process and a process for the epoxidation of an olefin A method for the start-up of a process for the epoxidation of an olefin, which method comprises contacting a catalyst bed comprising a silver-based highly selective epoxidation catalyst, or a precursor of the catalyst comprising the silver in cationic f... | 09/05/2006 |
| 7049451 | Carrier of catalyst for production of epoxide, catalyst for production of epoxide, and method for production of epoxide A carrier for use in the catalyst for the production of an epoxide is obtained by preparing a carrier precursor containing (a) α-alumina, (b) silicon or a compound thereof, and (c) at least one element selected from the class consisting of germanium, tin, lead, pho... | 05/23/2006 |
| 7026492 | Direct epoxidation process using modifiers The invention is a process for epoxidizing an olefin with hydrogen and oxygen in the presence of a noble metal-containing titanium or vanadium zeolite and a modifier selected from the group consisting of carbon monoxide, methylacetylene, and propadiene. The process ... | 04/11/2006 |
| 6927191 | Oxidation catalyst An inside layer including zeolite and an outside layer including alumina and Pd are formed in a layered shape on a carrier, and Ag and Bi are simultaneously allowed to be carried on the inside and outside layers through impregnation. Thus, production of an alloy thr... | 08/09/2005 |
| 6906208 | Mesoporous material and use thereof for the selective oxidation of organic compounds A material especially useful for the selective oxidation of hydrocarbons and other organic compounds includes a non-crystalline, porous inorganic oxide having at least 97 volume percent mesopores based on micropores and mesopores, and at least one catalytically acti... | 06/14/2005 |
| 6762311 | Ethylene oxide catalyst A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of critical amounts of an alkali metal component and a sulfur component, the catalyst being essentially free of rhenium and transition metal component... | 07/13/2004 |
| 6750173 | Ethylene oxide catalyst The invention relates to an ethylene oxide catalyst comprised of silver deposited on an alumina carrier which has been treated to remove at least 25% of the surface sodium ions and replace the removed sodium ions with up to 10 ppm of lithium ions and to the preparat... | 06/15/2004 |
| 6717001 | Process for operating the epoxidation of ethylene A process for the vapor phase oxidation of ethylene to ethylene oxide, which process involves reacting a reaction mixture having ethylene and oxygen in the presence of a supported highly selective silver-based catalyst by: operating at an initial operation phase whe... | 04/06/2004 |
| 6646142 | Process for the direct oxidation of olefins to olefin oxides A process and catalysts for the direct oxidation of an olefin having three or more carbon atoms, such as propylene, by oxygen to an olefin oxide, such as prbpylene oxide. The process involves contacting the olefin under reaction conditions with oxygen in ... | 11/11/2003 |
| 6624318 | Process for the epoxidation of an organic compound with oxygen or an oxygen-delivering compounds using catalysts containing metal-organic frame-work materials The present invention relates to a process for the reaction of at least one organic compound with one oxygen-delivering substance, for example a hydroperoxide, in the presence of at least one catalyst containing a metal-organic framework material comprisi... | 09/23/2003 |
| 6603028 | Method for oxidizing hydrocarbons The invention relates to a method for oxidizing hydrocarbons with a hydrogen/oxygen mixture in the presence of a catalyst. The catalyst contains a) a support material which contains titanium and b) silver particles having an average particle size ranging ... | 08/05/2003 |
| 6600056 | Catalyst for production of epoxides and methods for production thereof and epoxides It provide a catalyst for the production of epoxides by a vapor-phase oxidation of an unsaturated hydrocarbon having a chain length of 4-20 carbon atoms and containing no allylic hydrogen atom, characterized by having a catalytic component containing silv... | 07/29/2003 |
| 6500970 | Recovery and purification of 3,4-epoxy-1-butene using high-boiling solvents Disclosed is a process of recovering 3,4-epoxy-1-butene (epoxybutene) from an epoxybutene-laden reaction product gas by absorption into a high-boiling solvent. Also disclosed is a process for the purification of the epoxybutene by separating epoxybutene f... | 12/31/2002 |
| 6498122 | Olefin oxidation catalyst and process for its production An olefin oxidation catalyst comprising a carrier, and silver and an alkali metal supported thereon, wherein the content of organic substances is less than 0.1 wt %.... | 12/24/2002 |
