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Class 549/537 - Group IIA light metal containing material utilized


Subclass of Class 549 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein a material which contains a Group IIA
No. of patents: 48
Last issue date: 09/08/2009


1    
NumberTitleIssue Date
7585987Process 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. ...
09/08/2009
7193094Process 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
7153987Process 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
7122491Method 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
6906208Mesoporous 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
6750173Ethylene 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
6388106Selective epoxidation of conjugated diolefins
Disclosed is a process for the preparation of mono-epoxides of certain diolefins wherein a conjugated diolefin, or polyolefin, that contains allylic carbon-hydrogen bonds, is contacted with molecular oxygen in the presence of a modified silver catalyst....
05/14/2002
6362349Process for the direct oxidation of olefins to olefin oxides
A process for the direct oxidation of an olefin by oxygen to the corresponding olefin oxide in the presence of a reducing agent and a catalyst. The catalyst comprises a metal component, such as a transition metal oxide, dispersed on a metal ion-exchanged ...
03/26/2002
6323351Process 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 propylene oxide. The process involves contacting the olefin under reaction conditions with oxygen in ...
11/27/2001
6310223Process for the manufacture of 1,2-epoxybutane
Processes for the selective preparation of 3,4-epoxy-1-butene (EpB) to 1,2-epoxy-butane (butylene oxide-BO) in the presence of the supported catalysts, comprising one or more Group VIII metals deposited on the support materials which have micropores fille...
10/30/2001
6300507Process of manufacturing ethylene oxide
In manufacturing ethylene oxide by catalytic vapor phase oxidation of ethylene, a process comprising adding, as liquid, an organic halide as a reaction inhibitor into the ethylene raw material gas flow is provided. According to this process, ethylene oxid...
10/09/2001
6281370Silver catalyst for production of ethylene oxide, method for production thereof, and method for production of ethylene oxide
A catalyst for the production of ethylene oxide is formed by causing a carrier having ଱-alumina as a main component thereof to incorporate therein silica and a metal or a compound of at least one element selected from the elements of the groups Ib a...
08/28/2001
6087299Silver-containing supported catalysts and catalyst intermediates, processes for their preparation and their use
The present invention relates to silver-containing and optionally promoter-containing supported catalysts and catalyst intermediates, processes for their preparation and their use for preparing alkylene oxides by oxidation of alkenes with oxygen. The cata...
07/11/2000
5908942Epoxidation of butadiene using cesium fluoride promoted silver catalyst with enhanced thermal stability under reaction conditions
Disclosed is a process for the selective epoxidation of olefins, including diolefins, having more than 2 carbon atoms by the catalytic oxidation of such an olefin in the presence of a supported, fluorine-promoted, silver catalyst....
06/01/1999
5801259Ethylene oxide catalyst and process
This invention relates to an ethylene oxide catalyst which contains silver and one or more alkali metal promoters supported on a carrier prepared by a process comprising the use of ceramic particle components with particle sizes chosen to ensure that a de...
09/01/1998
5734068Silver catalyst for the oxidation of ethylene to ethylene oxide and process for preparing ethylene oxide
The invention relates to a silver catalyst for the partial oxidation of ethylene with molecular oxygen in the gas phase to form ethylene oxide and a process for preparing ethylene oxide using this catalyst. The catalyst is superior to comparable catalysts...
03/31/1998
5637739Chiral catalysts and catalytic epoxidation catalyzed thereby
Methods of using chiral catalysts for enantioselectively epoxidizing a prochiral olefin and for enantioselectively oxidizing a prochiral sulfide are disclosed. In accordance with one aspect of the invention, the catalyst used is a salen derivative which h...
06/10/1997
5618954Preparation of 3,4-epoxy-1-butene
3,4-Epoxy-1-butene is prepared by the gas phase epoxidation of 1,3-butadiene by means of oxygen or oxygen-containing gases over silver-containing catalysts and isolation of the 3,4-epoxy-1-butene from the reaction exit mixture by performing the gas phase ...
04/08/1997
5362890Gas phase process for the epoxidation of non-allylic olefins
Disclosed herein is an improved gas phase process for the selective epoxidation of non-allylic olefins wherein the epoxidation is carried out in the presence of certain inert, paraffin hydrocarbons. Such hydrocarbons possess higher heat capacities as comp...
11/08/1994
5281728Oxidation of ethylene
A silver catalyst suitable for the oxidation of ethylene is provided in which the silver within a support particle, e.g., alumina, is non-uniformly distributed so that the silver concentration is clearly greater on the geometric surface and in the surface...
01/25/1994
5145968Selective monoepoxidation of styrene, styrene analogs, and styrene derivatives to the corresponding oxide with molecular oxygen
Process is disclosed for the slective monoepoxidation of styrene, styrene analogs, and styrene derivatives. Such compounds are contacted with an oxygen-containing gas in the presence of a promoted, optionally supported silver catalyst under defined reacti...
09/08/1992
5063195High efficiency silver catalyst for the production of ethylene oxide via ethylene oxidation
A process for preparing silver-containing catalysts and their carriers for the production of ethylene oxide via ethylene oxidation and also to the applications of said catalysts in producing ethylene oxide. Commercial trihydrated ଱-alumina, boehmite, car...
11/05/1991
5008413Catalyst for oxidation of ethylene to ethylene oxide
An improved silver catalyst for the oxidation of ethylene with molecular oxygen is made by impregnating a support with a silver salt prepared by reacting a silver compound with a neo-acid, in a hydrocarbon solvent with the reaction completed under reflux ...
04/16/1991
4950773Selective epoxidation of olefins
Process is disclosed for the selective epoxidation of olefins having no allylic hydrogens. Such olefins are contacted with an oxygen-containing gas in the presence of a silver catalyst and an organic halide under defined reaction conditions, thereby selec...
08/21/1990
4897498Selective monoepoxidation of olefins
Process is disclosed for the selective mono epoxidation of olefins having no allylic hydrogens. Such olefins are contacted with an oxygen-containing gas in the presence of a silver catalyst under defined reaction conditions, thereby selectively producing ...
01/30/1990
4859786Olefin oxidation catalyst of unsupported silver containing low levels of magnesium
Olefins such as propylene can be oxidized to their epoxides by contacting gaseous olefin with oxygen in the presence of an unsupported silver catalyst. This catalyst is promoted with 30 to 1300 ppm (weight) magnesium relative to the silver....
08/22/1989
4847393Process for the production of ethylene oxide
In a process of producing ethylene oxide by contacting ethylene and oxygen with a main body of a solid catalyst in a reaction zone and passing product from that zone through a substantial volume to a cooler, acetaldehyde is produced by isomerization of et...
07/11/1989
4845253Silver-based catalyst for vapor phase oxidation of olefins to epoxides
A process of oxidizing an olefin having at least three carbon atoms directly to the corresponding epoxide comprising contacting the olefin with oxygen in the presence of a catalyst comprising a mixed silver-promoter metal (+2 or +3) silicate. In the direc...
07/04/1989
4841080Process for the oxidation of ethylene to ethylene oxide
A supported silver catalyst for the oxidation of ethylene with molecular oxygen to ethylene oxide is made by depositing silver on a support capable of selectively adsorbing alkali metals, activating the silver under conditions chosen to provide the optimu...
06/20/1989
4827071Ceramic membrane and use thereof for hydrocarbon conversion
The invention relates to a novel mixed ion and electron conducting catalytic ceramic membrane and to its use in hydrocarbon oxidation and or hydrogenation processes, the membrane consists of two layers, layer 1 which is an impervious mixed ion and electro...
05/02/1989
4822900Production of ethylene oxide
Ethylene oxide is produced by contacting ethylene and oxygen in the presence of a chlorine containing reaction modifier with a silver containing catalyst, nitropropane being also present. The nitropropane raises the selectivity of the process....
04/18/1989
4532231Process for producing a catalyst
A catalyst for the production of alkylene oxides is produced by impregnating a supported silver composition with a solution of an alkali metal compound. The uniformity of alkali metal distribution is improved by including in the solution at least 20% by w...
07/30/1985
4530910Regeneration of the Al2 O3 carrier material of a spent Ag/Al2 O3 supported catalysts
The Al2 O3 carrier material from Ag/Al2 O3 supported catalysts which is obtained after the silver has been removed from such spent catalysts in a conventional manner is regenerated by a method in which the carri...
07/23/1985
4409394Supported silver catalysts mixed with promoter metal compounds for the production of ethylene oxide
The activity and the service life of supported silver catalysts used in the preparation of ethylene oxide by the catalytic vapor phase oxidation of ethylene with molecular oxygen are extended by using mixtures of: (a) supported silver catalysts and promoter me...
10/11/1983
4400308Silver-containing supported catalysts and catalyst intermediate products, processes for their preparation and their use
Silver-containing supported catalyst, catalyst intermediates, processes for their preparation and the use of such catalysts in the preparation of alkaline oxides is described. By the preparatory technique of the invention there is obtained an improved cat...
08/23/1983
4272443Silver-containing carrier catalysts, process for their manufacture, and process for the manufacture of ethylene oxide using these catalysts
This invention concerns a new carrier catalyst, the active mass of which contains silver, a process for its manufacture and a process for the manufacture of ethylene oxide by reacting oxygen-containing gases with ethylene by using this catalyst. This carr...
06/09/1981
4248740Process for preparing silver-supported catalyst for the production of ethylene oxide
An improved process for preparing a silver-supported catalyst for use in the production of ethylene oxide by catalytic vapor phase oxidation of ethylene with molecular oxygen, which comprises impregnating a porous inorganic carrier with a solution of a si...
02/03/1981
4248741Method of making catalysts for the production of ethylene oxide
An improved process for preparing a silver catalyst which comprises impregnating a porous alumina support with a silver salt, preferably silver nitrate, by contacting a quantity of the support with an aqueous solution of the salt in sufficient amount to b...
02/03/1981
4242235Supports for silver catalysts utilized in the production of ethylene oxide
Silver catalysts for vapor phase synthesis of ethylene oxide by reacting oxygen or gaseous mixtures containing same with ethylene, characterized by the use as support of a porous material having a specific surface area of less than 10 sq. m/g, a total vol...
12/30/1980
4235757Ethylene epoxidation catalyst
A silver containing ethylene epoxidation catalyst prepared by impregnating a support with a solution comprising a reducible silver compound and reducing the silver compound to metallic silver in the presence of a diaminoalkyl-alkanol, preferably, 2-(2-ami...
11/25/1980
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