Patent application number | Description | Published |
20090048411 | Processes for producing ethylene and carbon monoxide mixtures from ethane - A method for producing a mixture of ethylene and carbon monoxide by contacting ethane and an oxygen source at a temperature of at least 500° C. to produce ethylene and carbon monoxide. A method for producing an alkyl propionate by steps of: (a) contacting ethane and an oxygen source at a temperature of at least 500° C. to produce ethylene; (b) contacting an alcohol, ethylene and carbon monoxide with an ethylene carbonylation catalyst to produce the alkyl propionate; and (c) separating the alkyl propionate from byproducts and starting materials. The method further comprises condensing the alkyl propionate with formaldehyde to produce an alkyl methacrylate. | 02-19-2009 |
20090054678 | Method for producing unsaturated carboxylic acids and nitriles - The present invention relates to an improved alkane (amm)oxidation process in which sulfur-bearing impurities present in the alkane feedstock are removed upstream from the (amm)oxidation reaction. | 02-26-2009 |
20090076303 | Process for selective reduction of propionic acid from (meth)acrylic acid product streams - The present invention relates to an improved process for the selective reduction of propionic acid, hereinafter “PA”, impurity from an acrylic acid, hereinafter “AA” stream. | 03-19-2009 |
20090082530 | Catalytic process for producing ethylene and carbon monoxide mixtures from ethane - A method for producing a mixture of ethylene and carbon monoxide by contacting ethane and an oxygen source with a catalyst comprising iron oxide supported on an inorganic material to produce ethylene and carbon monoxide. A method for producing an alkyl propionate by steps of: (a) contacting ethane and an oxygen source at a temperature of at least 600° C. to produce ethylene; (b) contacting an alcohol, ethylene and carbon monoxide with an ethylene carbonylation catalyst to produce the alkyl propionate; and (c) separating the alkyl propionate from byproducts and starting materials. The method further comprises condensing the alkyl propionate with formaldehyde to produce an alkyl methacrylate. | 03-26-2009 |
20090182186 | Supported catalyst for conversion of propane to propene and its use in a process for that conversion - A process for the conversion of propane to propene is disclosed wherein a silica chromium catalyst composition is contacted with a propane feed stream and a carbon dioxide. The silica chromium catalyst composition is further disclosed wherein the composition, optionally, includes a promoter component. | 07-16-2009 |
20100029975 | Integrated process for preparing a carboxylic acid from an alkane - The present invention relates to an integrated process for producing unsaturated carboxylic acids from the corresponding C | 02-04-2010 |
20100030004 | Hybrid autothermal catalytic process for converting alkanes to alkenes and catalysts useful for same - The present invention relates to a thermally integrated multi-zone process for conversion of alkanes to their corresponding alkenes, involving endothermically converting an alkane to its corresponding alkene by soft oxidant conversion in an endothermic reaction zone, in the presence of a weak oxidant, a suitable catalyst, and heat, to produce an intermediate product gas comprising the corresponding alkene and hydrogen. The weak oxidant may be, for example, carbon dioxide. The hydrogen is then removed from the intermediate product gas by contacting the intermediate product gas, in an exothermic reaction zone, with different second catalyst, and oxygen, to combust the hydrogen and produce a heated product stream comprising the corresponding alkene, water and heat. Heat is recovered from the heated product stream and recycled back to the endothermic reaction zone, while the resulting cooled product stream comprising the corresponding alkene may be subjected to further reaction and/or processing. | 02-04-2010 |
20100087615 | Process for the oxidative dehydrogenation of ethane - A method for producing a mixture of ethylene and carbon monoxide by contacting ethane and an oxygen source with a catalyst comprising synthetic cryptomelane or octahedral molecular sieve. The method further comprises condensing the alkyl propionate with formaldehyde to produce an alkyl methacrylate. | 04-08-2010 |
20130267735 | Propane Oxidation Process Using Reduced Amounts of Steam - Less propionic acid is produced as a by-product in a process for the direct oxidation of propane to acrylic acid, the process comprising the step of contacting under oxidation conditions a gaseous mixture comprising (i) propane, (ii) oxygen, (iii) steam and (iv) a diluent gas, with a propane oxidation catalyst by reducing the steam content of the gaseous mixture. | 10-10-2013 |
20130274509 | Reactor and Process for Propane Oxidation - The amount of propionic acid produced in the process of oxidizing propane to acrylic acid is reduced by using a reactor with a length/diameter ratio >10 and/or maintaining the difference between the target reaction temperature and the peak temperature within the reactor to less than 20° C. | 10-17-2013 |
20140243554 | METHOD FOR PREPARING ACRYLIC ACID FROM PROPANE AND PROPYLENE - The application concerns a process comprising: (A) contacting a gas comprising oxygen, propane and propylene with at least one catalyst under reaction conditions sufficient to at least partially convert the propylene into a final product comprising acrylic acid; (B) feeding said final product to a separation column, in which the final product is split into a liquid stream, which is rich in acrylic acid, and a gaseous by-product stream comprising propane and propylene in a volume ratio of from 99.9:0.1 to 95:5; (C) contacting the gaseous by-product stream with oxygen in the presence of a catalyst under reaction conditions sufficient to at least partially convert propane to acrylic acid. | 08-28-2014 |
20140350298 | PROCESS FOR THE (AMM)OXIDATION OF LOWER MOLECULAR WEIGHT ALKANES AND ALKENES - A process for producing unsaturated carboxylic acids or unsaturated nitriles by vapor phase oxidation reaction of their corresponding C | 11-27-2014 |
20150045582 | PROCESS FOR MAKING ETHYLENE AND ACETIC ACID - A process comprising catalytically converting ethane to ethylene and acetic acid in the presence of oxygen at a temperature of 450° C. or less in the gas phase wherein the catalyst has the empirical formula MoV | 02-12-2015 |