Matches 1 - 50 out of 192 1 2 3 4 >


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9012683 Coproduction of acetic acid and acetic anhydride  
Disclosed is a process for the coproduction of acetic acid and acetic anhydride by producing in a first carbonylation reactor a carbonylation product mixture containing acetic anhydride, removing...
8912358 Removing hydrocarbon impurities from acetic acid production intermediate  
A method for removing hydrocarbon impurities from an acetic acid production intermediate is disclosed. The method comprises extracting the intermediate with a hydrocarbon extracting agent. The...
8829234 Hydrocarboxylation of formaldehyde in the presence of a higher order carboxylic acid and heterogeneous catalyst  
Disclosed is a process for the production and purification of glycolic acid or glycolic acid derivatives by the carbonylation of formaldehyde in the presence of a solid acid catalyst and a...
8785684 Methanol carbonylation process with rhodium catalyst, an iodide salt and a metallic co-catalyst selected from transition metals, indium, strontium, barium, zinc, tin and heteropoly acids  
A carbonylation process for making acetic acid uses a metallic co-catalyst composition effective as a rhodium stabilizer and rate promoter at molar ratios of metal/rhodium of from about 0.5 to 30....
8710156 Process of preparing functionalized polymers via enzymatic catalysis  
The invention relates to functionalized, telechelic polymers synthesized by enzymatic catalysis and methods, and the functionalization of polymers via Michael addition with a lipase catalyst, and...
8703075 Acetic acid production by way of carbonylation with enhanced reaction and flashing  
A method of making acetic acid includes: (a) catalytically reacting methanol or a reactive derivative thereof with carbon monoxide in the presence of a homogeneous Group VIII metal catalyst and a...
8697908 Removal of amine compounds from carbonylation process stream containing corrosion metal contaminants  
A process for removing amine compounds from a process stream derived from a carbonylation process. The amine compounds may be present as iodide salts. The process stream also contains corrosion...
8692015 Carbonylation process  
Process for the production of at least one carbonylation product selected from acetic acid and methyl acetate, by carbonylating at least one carbonylatable reactant selected from methanol and...
8624054 Carbonylation process for the production of methyl acetate  
A process for the production of methyl acetate by reacting dimethyl ether with carbon monoxide into a carbonylation reactor containing a mordenite catalyst in the presence of added methyl acetate...
8563773 Eductor-based reactor and pump around loops for production of acetic acid  
Eductor mixers are used to mix the reaction medium in a carbonylation reactor. A portion of the reaction solution withdrawn from the reactor and directed through a pump around loop. The pump...
8530696 Pump around reactor for production of acetic acid  
The present invention relates to improved processes for the manufacture of acetic acid. A pump around reactor is used to produce additional heat for the production of steam. The pump around...
8378141 Process and system for supplying vapor from drying column to light ends column  
The present invention is directed to a method of heating a light ends column through directing one or more vapor side streams from a drying column to the light ends column. The present invention...
8173076 Method and apparatus for making acetic acid with improved light ends column productivity  
An improved apparatus and method of producing acetic acid includes condensing overhead vapor to provide reflux to the light ends column as well as condensing vapor from a central portion of the...
8076506 Process for the reduction of aldehyde concentration in a target stream  
A process for reducing the aldehyde concentration in a target stream of a carbonylation process is disclosed. More specifically, a process for reducing the aldehyde concentration in an internal...
8058472 Method for the conversion, under mild conditions and in aqueous medium, of gaseous and liquid alkanes into carboxylic acids  
The present invention concerns a new efficient method for the selective transformation, under mild conditions and in aqueous medium, of gaseous (ethane, propane and n-butane) and liquid...
8053600 Process for the preparation of carboxylic acids and/or derivatives thereof  
Process for preparing an aliphatic carboxylic acid having (n+1) carbon atoms, where n is an integer up to 6, and/or an ester or anhydride thereof by contacting an aliphatic alcohol having n carbon...
7989659 Method and apparatus for making acetic acid with improved light ends column productivity  
An improved apparatus and method of producing acetic acid includes condensing overhead vapor to provide reflux to the light ends column as well as condensing vapor from a central portion of the...
7902398 Method and apparatus for carbonylation with reduced catalyst loss  
An apparatus and method for carbonylating a reactant, including sequestering Group VIII catalyst metal from a process stream which generally has a ppb concentration of the catalyst metal. The...
7902397 Method and apparatus for making acetic acid with improved productivity  
An improved apparatus and method of producing acetic acid includes recovering product from the residue of a light ends column and feeding the acid so recovered forward in order to increase system...
7790920 Preparation of acetic acid  
A process for producing acetic acid is disclosed. The process comprises carbonylating methanol to form a reaction mixture comprising a catalyst, catalyst stabilizer, acetic acid, methanol, methyl...
7737298 Production of acetic acid and mixtures of acetic acid and acetic anhydride  
Disclosed is a process for the production of acetic acid or mixtures of acetic acid and acetic anhydride in a carbonylation process wherein a mixture comprising methyl acetate and/or dimethyl...
7629491 Hydrocarboxylation process  
Disclosed is a hydrocarboxylation process for the production of carboxylic acid from olefins wherein an olefin, water, a Group VIII metal hydrocarboxylation catalyst, an onium salt compound are...
7470811 Integrated process for acetic acid and methanol  
An integrated process for making methanol, acetic acid, and a product from an associated process is disclosed. Syngas (120) is produced by combined steam reforming (109) and autothermal reforming...
7465823 Utilization of acetic acid reaction heat in other process plants  
Integrated processes and systems for producing acetic acid and vinyl acetate are provided. In the processes and systems, a portion of the heat produced during the production of the acetic acid is...
7465822 Process for carbonylation of alkyl ethers  
A product comprising a lower alkyl ester of a lower aliphatic carboxylic acid is produced by a process comprising reacting under substantially anhydrous conditions a lower alkyl ether with carbon...
7381838 Preparation of tertiary carboxylic acids  
Process for carrying out catalytic multiphase reactions in a tubular reactor, in which at least three reactants are present in three different phases, wherein the process is carried out in at...
7368597 Carbonylation process using metal-polydentate ligand catalysts  
A process for the liquid phase carbonylation of an alcohol and/or a reactive derivative thereof in the presence of hydrogen in which there is employed a catalyst comprising rhodium of iridium...
7348454 Process for the hydrocarboxylation of ethylenically unsaturated carboxylic acids  
A process for the hydrocarboxylation of an ethylenically unsaturated carboxylic acid, by reacting it with carbon monoxide and a co-reactant selected from the group of water and carboxylic acids in...
7276626 Carbonylation process using metal-tridentate ligand catalysts  
A process for the production of a carboxylic acid and/or the alcohol ester of a carboxylic acid by carbonylating an alcohol and/or a reactive derivative thereof with carbon monoxide employing as...
7265242 Process for the carbonylation of ethylenically or acetylenically unsaturated compounds  
A process for the carbonylation of unsaturated compounds by contacting the unsaturated compound with carbon monoxide in the presence of a catalyst system comprising: (a) a source of palladium...
7253304 Carbonylation process  
Disclosed is a carbonylation process wherein a mixture of a dialkyl carbonate and halide compound is contacted with carbon monoxide in the presence of a metal selected from Group VIII of the...
7223883 Removal of permanganate reducing compounds from methanol carbonylation process stream  
An improvement of the methanol carbonylation process for manufacturing acetic acid is disclosed. Specifically disclosed is a method for removing permanganate reducing compounds (“PRC's”) from the...
7115774 Process for carbonylating alcohols, employing a catalyst based on rhodium or iridium in a non-aqueous ionic liquid, with efficient catalyst recycling  
In a process for liquid phase carbonylation of alcohols by carbon monoxide, the carbonylation reaction is carried out in a reaction zone at a temperature of 50° C. to 150° C. at a pressure in the...
6916954 Catalyst system and method for carbonylation  
The invention relates to a catalyst system for carbonylating olefinically or acetylenically unsaturated compounds with carbon monoxide and a nucleophile compound, containing (a) palladium; (b) a...
6916951 Continuous carbonylation process  
Disclosed is a continuous process wherein carbon monoxide, a carbonylatable reactant, and a halide in the gas phase are contacted with a non-volatile catalyst solution comprising an ionic liquid...
6858753 Process for the preparation of carboxylic acids from aliphatic alcohols  
The present invention provides an improved process for the production of carboxylic acids by the carbonylation of alcohol. The process involves contacting an alcohol with carbon monoxide in the...
6784313 Process for producing carboxylic acids  
A process for producing a carboxylic acid having (n+1) carbon atoms, which includes carbonylating an alcohol having n carbon atoms, and/or an ester of the alcohol and the carboxylic acid in each...
6686500 Process for the production of acetic acid  
A process for the production of acetic acid by reacting carbon monoxide with methanol and/or a reactive derivative thereof in a liquid reaction composition comprising an iridium carbonylation...
6677480 Process control in production of acetic acid via use of heavy phase density measurement  
A process for monitoring and controlling reactor conditions during the production of acetic acid by the catalyzed carbonylation of methanol is provided. The process of the present invention...
6646154 Method for carbonylation of lower alkyl alcohols using tungsten promoted group VIII catalyst  
A vapor-phase carbonylation method for producing esters and carboxylic acids from reactants comprising lower alkyl alcohols, lower alkyl alcohol generating compounds, and mixtures thereof. The...
6642413 Process for monitoring a continuous acetic acid and/or methyl acetate production  
A continuous preparative process, including monitoring production, for acetic acid, methyl acetate or a mixture thereof, by carbonylation, in an industrial installation, of methanol or a...
6617471 Method for carbonylation of lower aliphatic alcohols using tin promoted iridium catalyst  
A vapor-phase carbonylation method for producing esters and carboxylic acids from reactants comprising lower alkyl alcohols, lower alkyl alcohol generating compounds, and mixtures thereof. The...
6552221 Process control for acetic acid manufacture  
A method of real time process control in a reaction system for the production of acetic acid from the carbonylation of methanol. Reaction system samples are collected from columns and/or transfer...
6521783 Processes for preparing oxygenates  
This invention relates in part to a processes for the conversion of a feedstock stream comprising carbon monoxide and hydrogen to a product stream comprising at least one of an ester, acid, acid...
6465680 Process for preparing malonate derivatives or β-keto esters from epoxide derivatives  
A process for preparing a malonic acid monoester or β-ketoester from an epoxide includes the steps of reacting an epoxide with carbon monoxide and an alcohol in the presence of a catalytic amount...
6452043 Carbonylation of lower alkyl alcohols and their derivatives using metals supported on carbonized polysulfonated divinylbenzene-styrene copolymers  
A method for producing esters, carboxylic acids and mixtures thereof includes contacting, under carbonylation conditions, lower alkyl alcohols, ethers, lower alkyl alcohol derivatives and mixtures...
6420304 Polymer-supported carbonylation catalyst and its use  
The invention relates to a polymer-supported carbonylation catalyst and its use in a process for preparing organic carboxylic acid or anhydride having n+1 carbon atoms. The invention relates also...
6395927 Method for preparing acetic acid and/or methyl acetate by isomerization and carbonylation  
A method for preparing acetic acid and/or methyl acetate by simultaneous isomerization and carbonylation reactions. A reaction mixture is provided containing at least one reagent which provides...
6362366 Manufacturing and process control methods  
There is provided a process control method for the production of acetic acid by the catalyzed carbonylation of methanol and a process for the manufacture of acetic acid using the process control...
6355837 Vapor phase carbonylation process using group 4 metal promoted iridium catalyst  
A method for producing esters and carboxylic acids from lower alkyl alcohols, ethers, esters and ester-alcohol reactant mixtures and includes the step of contacting a vaporous mixture of the...

Matches 1 - 50 out of 192 1 2 3 4 >