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| Number | Title | Issue Date |
| 7897804 | Processes for preparing alkenyl alkanoates using a layered catalyst composition A layered composition which can be used in various processes has been developed. The composition comprises an inner core such as a cordierite core and an outer layer comprising a refractory inorganic oxide, a fibrous component and an inorganic binder. The refractory... | 03/01/2011 |
| 7468455 | Process and apparatus for improved methods for making vinyl acetate monomer (VAM) The invention provides methods, apparatus and chemical systems for making vinyl acetate from ethylene, oxygen, and acetic acid. ... | 12/23/2008 |
| 7411107 | Alkene separation process A process for the oxidation of a C2 to C4 alkane to produce the corresponding alkene and carboxylic acid which process comprises separation of the alkene from a mixture of the alkene, the alkane and oxygen by absorption in a metallic salt solut... | 08/12/2008 |
| 7371358 | Catalyst for treatment and control of post-combustion emissions The present invention utilizes two precious metals with two to five different metal-oxides in a layered matrix to convert CO, HCs, and NOx to CO2, and N2 by oxidation of two components and reduction of the other in a moderately high temperature... | 05/13/2008 |
| 7297324 | Microchannel reactors with temperature control Microchannel devices and method of use are disclosed wherein a reaction microchamber 52 is in thermal contact with a heat exchange channel 61. An equilibrium limited exothermic chemical process occurs in the reaction microchamber 52. Sufficient ... | 11/20/2007 |
| 7265243 | Catalytic oxacylation vapor phase process This invention relates to a catalyst which comprises palladium metal as the main catalyst, tin metal or a mixture of tin and additional metals as the promoter, in combination with an alkali or alkaline earth metal compound, supported on the outer surface of a porous... | 09/04/2007 |
| 7211688 | Process for the production of an alkenyl carboxylate or an alkyl carboxylate Process for producing an alkyl carboxylate, comprising contacting in an oxidation reaction zone a C2 to C4 alkane, a molecular oxygen-containing gas, the corresponding alkene and optionally water, in the presence of at least one catalyst active... | 05/01/2007 |
| 7189377 | Apparatus for performing integrated process for reproduction of vinyl acetate and/or acetic acid using a fluidized bed 1. Acetic acid and/or vinyl acetate are produced by an integrated process which comprises the steps:— (a) contacting in a first reaction zone a gaseous feedstock comprising ethylene and/or ethane and optionally steam with a molecular oxygen-containing... | 03/13/2007 |
| 7166742 | Fluid bed process for the acetoxylation of ethylene in the production of vinyl acetate A fluid bed process for the manufacture of vinyl acetate from ethylene, acetic acid and oxygen comprising feeding ethylene and acetic acid into a fluid bed reactor through a first inlet, introducing the oxygen into the reactor through a second inlet, co-joining the ... | 01/23/2007 |
| 7081549 | Process for the production of acetic acid A process for the production of acetic acid, which process comprises contacting ethane and/or ethylene with a molecular oxygen-containing gas in a fluid bed reactor in the presence of a microspheroidal fluidised particulate solid oxidation catalyst, wherein at least... | 07/25/2006 |
| 7078563 | Oxidation process for the production of alkenes and carboxylic acids A process for the oxidation of a C2 to C4 alkane to produce the corresponding alkene and carboxylic acid which process comprises contacting in an oxidation reaction zone, said alkane, molecular oxygen-containing gas, and the corresponding alken... | 07/18/2006 |
| 7053024 | Process for making a catalyst Process for preparing a supported metal catalyst composition comprising impregnating support particles having a mean diameter of greater than 300 microns with a solution of least one catalytically active metal, or precursor thereof, such that the metal, or its precu... | 05/30/2006 |
| 6852877 | Process for the production of vinyl acetate A process for the production of vinyl acetate comprising contacting in a first reaction zone a gaseous feedstock comprising essentially ethane with a molecular oxygen-containing gas in the presence of a catalyst to produce a first product stream comprising acetic ac... | 02/08/2005 |
| 6815394 | Palladium-based catalysts A phenyl ester is produced by allowing benzene, a carboxylic acid and molecular oxygen to react with each other in the presence of a catalyst comprising (A) palladium, (B) at least one element selected from elements of groups 13, 14, 15, and 16 and the fourth to six... | 11/09/2004 |
| 6809218 | Sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity. ... | 10/26/2004 |
| 6768013 | Intrinsically safe oxidation process A novel process for the direct oxidation of hydrogen and hydrocarbons is disclosed, where the explosion risks inherent in gas phase oxidations are substantially eliminated. Gaseous oxidation reactants are soluble in a first reaction solvent phase such as a perfluoro... | 07/27/2004 |
| 6696596 | Catalyst and method for producing vinyl acetate A process for preparing vinyl acetate in the gas phase from ethylene, acetic acid and oxygen or oxygen-containing gases over a catalyst, consisting essentially of palladium and/or its compounds, gold and/or its compounds and alkali metal compounds on a su... | 02/24/2004 |
| 6649789 | Catalyst based on palladium, gold, alkali metal and lanthanoid and process for preparing vinyl acetate A process for the vapor phase preparation of vinyl acetate in the presence of a catalyst of 0.2 to 1.3% by weight of gold or a gold compound, 0.3 to 10% by weight of an alkali metal compound, 0.5 to 2.0% by weight of a palladium compound and 0.01 to 1% by... | 11/18/2003 |
| 6620965 | Process for vinyl acetate A process for producing vinyl acetate comprising reacting ethylene, acetic acid and oxygen together in at least partially liquid phase in the presence of a catalyst comprising a noble metal component.... | 09/16/2003 |
| 6541660 | Process for preparing C5 acetate A process is proposed for preparing C5 acetate for Vitamin A synthesis by hydroformylation of 3,4-diacetoxybut-1-ene (3,4-DABE), according to which a 3,4-DABE is used which is obtained by acetoxylation of 1,3-butadiene with acetic acid and air ... | 04/01/2003 |
| 6528679 | Process for producing phenyl esters using palladium-based catalysts A phenyl ester is produced by allowing benzene, a carboxylic acid and molecular oxygen to react with each other in the presence of a catalyst comprising (A) palladium, (B) at least one element selected from elements of groups 13, 14, 15, and 16 and the fo... | 03/04/2003 |
| 6472556 | Catalyst and use thereof in the production of vinyl acetate A catalyst for use in the production of vinyl acetate which comprises (1) a catalyst support, (2) palladium, (3) an acid, (4) at least one acetic acid catalyst promoter and (5) at least one vinyl acetate promoter and/or co-promoter. A process for the prod... | 10/29/2002 |
| 6376706 | Catalyst and use thereof in the production of vinyl acetate A catalyst for use in the production of vinyl acetate which comprises (1) a catalyst support, (2) palladium, (3) an acid, (4) at least one acetic acid catalyst promoter and (5) at least one vinyl acetate promoter and/or co-promoter. A process for the prod... | 04/23/2002 |
| 6350900 | Vinyl acetate catalyst comprising metallic palladium and gold prepared with potassium aurate A catalyst for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid comprising a porous support on the porous surfaces of which is deposited catalytically effective amounts of metallic palladium and gold, said catalyst having be... | 02/26/2002 |
| 6350901 | Process for the production of vinyl acetate In a process for production of vinyl acetate in which ethylene, liquid acetic acid and an oxygen-containing gas are fed to a fluid bed reactor containing a catalyst comprising a Group VIII metal, a promoter and a co-promoter, stickiness of the catalyst is... | 02/26/2002 |
| 6342628 | Process for the production of vinyl acetate In a process for production of vinyl acetate by the reaction of ethylene, acetic acid and oxygen, ethylene is recovered from the gases withdrawn from the reactor and recycled such that the amount of ethylene in the combined feed to the reactor is at least... | 01/29/2002 |
| 6333444 | Oxidation catalyst and process utilizing the catalyst A catalyst composition and its use for the oxidation of ethane to ethylene and/or acetic acid and/or for the oxidation of ethylene to acetic acid which comprises in combination with oxygen the elements molybdenum, vanadium, niobium and gold in the absence... | 12/25/2001 |
| 6303536 | Process of preparing catalyst for producing alkenyl acetates This invention relates to a preparation process of a catalyst which comprises a noble metal and a metal as catalysis promoter in combination with an alkali or alkaline earth metal compound, supported on the outer surface of a carrier. The preparation proc... | 10/16/2001 |
| 6239324 | Diene compound and process for producing the same The invention provides a chain diene compound with desirable regioselectivity, in the presence of a specific ruthenium compound. This chain diene compound is a promising raw material for terpene. It has a structure represented by the general formula (IX):... | 05/29/2001 |
| 6180821 | Integrated process for the production of vinyl acetate and/or acetic acid using a fluidized bed Acetic acid and/or vinyl acetate are produced by an integrated process in which a gaseous feedstock comprising ethylene and/or ethane and optionally steam is contacted in a first reaction zone (step (a)) with a molecular oxygen-containing gas in the prese... | 01/30/2001 |
| 6118021 | Membrane process for argon purging from vinyl acetate reactors A process and apparatus for vinyl acetate production. A membrane unit containing a membrane selectively permeable to ethylene over argon is used to recover ethylene from the argon purge stream.... | 09/12/2000 |
| 6040474 | Integrated process for the production of vinyl acetate and/or acetic acid 1. Acetic acid and/or vinyl acetate are produced by an integrated process which comprises the steps: (a) contacting in a first reaction zone a gaseous feedstock comprising ethylene and/or ethane and optionally steam with a molecular oxygen-containing gas ... | 03/21/2000 |
| 5808136 | Catalyst, method of its production and its use for the production of vinyl acetate monomer A catalyst and method of its production for use in making vinyl acetate monomer. The carrier is impregnated with a basic solution and a solution containing gold salts and palladium salts and finally impregnated with alkali acetate. The activity and select... | 09/15/1998 |
| 5789609 | Optically active diphosphine, transition metal complex containing the same, and process for producing optically active compound using the complex Disclosed are an optically active diphosphine represented by formula: ##STR1## wherein R represents a lower alkyl group having 1 to 4 carbon atoms; Ar represents a phenyl group which may be substituted with a lower alkyl group having 1 to 4 carbon at... | 08/04/1998 |
| 5559267 | Hydrogenation process using catalysts made from chiral phospholanes via chiral 1,4-diol cyclic sulfates Chiral 1,4-diol cyclic sulfates and their use as precursors in the preparation of chiral phospholane ligands, and chiral complexes useful as catalysts for carrying out enantioselective reactions.... | 09/24/1996 |
| 5559071 | Catalyst, process for the production thereof, and use thereof for the preparation of vinyl acetate Surface impregnated catalyst, process for the production thereof, and use thereof for the preparation of vinyl acetate. The invention relates to Pd/K/Au, Pd/K/Ba or Pd/K/Cd supported catalysts built up in the form of an outer layer, the production thereof... | 09/24/1996 |
| 5554786 | Process for the preparation of carboxylic esters defined from allylic alcohols A process which comprises reacting an aliphatic or cycloaliphatic olefin, having 4 to 16 carbon atoms in its main chain and a non-terminal double bond, with a carboxylic acid, in the presence of hydrogen peroxide and a catalyst consisting of a palladium s... | 09/10/1996 |
| 5466837 | Process for the production of hydrocarbon partial oxidation products An ethylene stream which contains ethane as an impurity or a propylene stream which contains propane as an impurity is subjected to adsorption at a temperature of 50° to 200° C. in a bed of adsorbent which selectively adsorbs ethylene or propylene, ther... | 11/14/1995 |
| 5322633 | Preparation of branched chain carboxylic esters Branched chain carboxylic esters are prepared by reacting an unsaturated PAO such as 1-decene dimer with CO and an aliphatic alcohol solvent in the presence of an acid and a noble metal catalyst complex such as RuCl3 /Ph3 P or PdCl | 06/21/1994 |
| 5008445 | Process for the production of glycol monoesters The present invention relates to a process for producing glycol monoesters by reacting carboxylic acid, olefin and oxygen in the presence of a catalyst containing (A) a palladium component, (B) an oxygen-containing nitrogen compound, and (C) a metal halid... | 04/16/1991 |
