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7491843 Integrated process for the production of vinyl acetate and/or acetic acid  
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...
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.
7411107 Alkene separation process  
A process for the oxidation of a C 2 to C 4 alkane to produce the corresponding alkene and carboxylic acid which process comprises separation of the alkene from a mixture of the alkene, the...
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...
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 C 2 to C 4 alkane, a molecular oxygen-containing gas, the corresponding alkene and optionally...
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...
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...
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...
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...
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,...
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...
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.
6541660 Process for preparing C5 acetate  
A process is proposed for preparing C 5 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...
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...
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...
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...
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...
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,...
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.
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...
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...
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.
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...
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...
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...
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...
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...
4900462 Polar lubricating fluid and a method for its synthesis  
A polar lubricating fluid comprising aliphatic molecules having hydroxy or ester functional groups. The alcohol lubricant molecules have at least 20 carbon atoms and the ester molecule comprises...
4749808 Proton-catalysed reactions in which water is not a stoichiometric reactant catalysed by metal cation exchanged layered clays  
The invention relates to the use of metal cation-exchangeable layered clays in organic reactions which are catalysed by protons in which intercalated water is not a stoichiometric reactant. Such...
4658053 Production of esters  
A process for the production of an ester comprises reacting an olefin with carbon monoxide, hydrogen and another ester at elevated temperature and pressure in the presence of a catalyst comprising...
4647690 Process for the production of allyl acetate  
A process and catalyst for the acetoxylation of propylene, said catalyst consisting essentially of palladium, bismuth, potassium, and rubidium.
4614816 Preparation of carboxylic acids and esters thereof  
A carboxylic acid or an ester thereof having at least two carbon atoms more than formic acid is prepared by reacting at elevated temperature e.g. 100° to 250° C. formic acid or a formate ester...
4602103 Process for the oxidation of butenes to linear acetates  
C 4 olefins comprising cis- and trans-butane-2 and butene-1 may be oxidized to their corresponding mono- and diacetates in the presence of acetic acid and an olefin-activated palladium catalyst...
4508653 Method for preparing acyloxy styrenes  
The oxidation process for the manufacture of acyloxy styrenes comprises contacting a compound such as styrene or ethyl benzene, a carboxylic acid and molecular oxygen in the liquid phase at an...
4365082 Process for converting olefins to unsaturated esters, using catalysts containing palladium hydroxamates  
Olefins are oxidized to unsaturated esters by means of molecular oxygen in the presence of a carboxylic acid and an organometallic palladium complex containing two identical or different...
4348537 Olefin oxidation  
Olefin is oxidized in the absence of oxygen with a carboxylic acid in the presence of Mn(IV) oxide promoted with a noble metal to produce an effluent which includes mono and/or diester...
4331608 Liquid phase catalytic co-oxidation process  
Unsaturated compounds having at least 4 carbon atoms, including unsaturated alicyclic compounds having at least 4 carbon atoms, unsaturated aliphatic compounds having at least one carbon-carbon...
4323698 Resin-metal compound complex for catalyzing chemical reactions  
This specification discloses an insoluble resin-metal compound complex, the method for its preparation, and its use in carrying out a catalyzed reaction. The complex is a weak base anion exchange...
4260750 Telomerization process  
A process for the telomerization of dienes with a telomerizing compound containing a mobile hydrogen atom is disclosed wherein the reaction between the diene and the telomerizing agent is effected...
4221916 Oxidative esterification process  
Saturated vicinal esters produced by reacting olefins with carboxylic acid and anhydrides thereof in the presence of oxygen and a vanadium- or ruthenium-containing catalyst.
4211880 Resin-metal compound complex  
This specification discloses an insoluble resin-metal compound complex, the method for its preparation, and its use in carrying out a catalyzed reaction. The complex is a weak base anion exchange...
4161610 Process for preparing vinyl esters  
This invention involves a method of producing vinyl esters by the reaction of olefins with carboxylic acids in the presence of alkali and alkaline earth metal salts of carboxylic acids, a noble...
4062872 Process of oxidizing hydrocarbons using catalysts with high heat conductivity  
An improved catalyst structure for use in catalytic processes, consisting of a powdered catalyst, carrier, and metal fiber thoroughly mixed to assure a permanent uniform distribution of the metal...
4057575 Process for the preparation of unsaturated esters  
The invention comprises the oxidation of olefins to unsaturated esters of organic acids or acetals and/or unsaturated ethers of alcohols by contacting the olefin with an organic acid or alcohol...
4052442 Process for preparing glycol esters  
A process for preparing glycol esters such as ethylene glycol diacetate which comprises contacting a monoolefin such as ethylene with an organic monocarboxylic acid such as acetic acid containing a...
4051181 Oxidation of allyl alcohol to acrylic acid  
A three-step process for the production of acrolein and/or acrylic acid from propylene involves oxidizing the propylene in the presence of a palladium catalyst and acetic acid to produce allyl...
4005113 Multi-step process for preparation of tetrahydrofuran starting from propylene, oxygen and a carboxylic acid  
A process for preparing tetrahydrofuran the last step of which comprises heating a carboxylic acid of 1,4-butanediol with water in the presence of a hydrolysis-dehydroacyloxylation catalyst.
3989742 Process for the production of vinyl acetate from ethylene  
The copper and palladium ethylene-oxidation catalyst used in the preparation of vinyl acetate is regenerated in a process including deposition of the metals from solution in a Daniell-type galvanic...
3987009 Transition metal catalyst compositions  
A catalyst composition consisting essentially of a non-linear polymer consisting essentially of a recurring unit having the following structural formula: (R 2 ) 2 P--R 1 --Si--O 3 /2 wherein...
3981931 Diols by transesterification using magnesia catalysts  
A process for preparing diols which comprises reacting diol esters with a lower alkanol in the presence of a transesterification catalyst comprising magnesia.
Matches 1 - 50 out of 141 1 2 3 >