35249-89-9Relevant articles and documents
Oxidative degradation of reducing carbohydrates to ammonium formate with H2O2 and NH4OH
Pullanikat, Prasanna,Jung, Sangmook J.,Yoo, Kyung Soo,Jung, Kyung Woon
supporting information; experimental part, p. 6192 - 6194 (2011/01/04)
Oxidation of various carbohydrates into ammonium formate was investigated in the presence of hydrogen peroxide and ammonium hydroxide. Most of the examined carbohydrates except nonreducing sugars were efficiently converted into ammonium formate under envi
Chemoenzymatic synthesis of glycolic acid
Panova, Anna,Mersinger, Lawrence J.,Liu, Qiang,Foo, Thomas,Roe, D. Christopher,Spillan, William L.,Sigmund, Amy E.,Ben-Bassat, Arie,Winona Wagner,O'Keefe, Daniel P.,Wu, Shijun,Perrillo, Kelly L.,Payne, Mark S.,Breske, Stephen T.,Gallagher, F. Glenn,Dicosimo, Robert
, p. 1462 - 1474 (2008/03/28)
A chemoenzymatic process for the production of high-purity glycolic acid has been demonstrated, starting with the reaction of formaldehyde and hydrogen cyanide to produce glycolonitrile in > 99 % yield and purity. The resulting aqueous glycolonitrile was used without further purification in a subsequent biocatalytic conversion of glycolonitrile to ammonium glycolate. A high-activity biocatalyst based on an Acidovorax facilis 72W nitrilase was developed, where protein engineering and optimized protein expression in an E. coli transformant host were used to improve microbial nitrilase specific activity by 33-fold compared to the wild-type strain. A biocatalyst productivity of > 1000 g glycolic acid/g dry cell weight was achieved using a glutaraldehyde/ polyethylenimine cross-linked carrageenan-immobilized E. coli MG1655 transformant expressing the A. facilis 72W nitrilase mutant, where 3.2M ammonium glycolate was produced in consecutive batch reactions with biocatalyst recycle, or in a continuous stirred-tank reactor. Direct conversion of the unpurified ammonium glycolate product solution to high-purity aqueous glycolic acid was accomplished by fixed-bed ion exchange over a strong acid cation resin.
METHOD TO PRODUCE A CARBOXYLIC ACID ESTER FROM A CARBOXYLIC ACID AMMONIUM SALT BY ALCOHOLYSIS
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Page/Page column 19-21, (2008/06/13)
The present invention relates to a method for obtaining a carboxylic acid ester from an aqueous solution of the corresponding carboxylic acid ammonium salt using alcoholysis. The recovered carboxylic acid ester may be subsequently hydrolyzed to produce the corresponding carboxylic acid.
Process for slurry fischer-tropsch hydrocarbon synthesis with high surface area reduced-carbided iron/manganese catalysts
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, (2008/06/13)
Slurried, high surface area, Cu and Group IA or IIA dual metal promoted Mn-Fe spinels which are fully reduced and carburized provide exceptionally high catalytic activity and selectivity in the conversion of CO+H2 to alpha-olefins, particularly when reduced and carbided in-situ. These copper and Group IA or IIA metal promoted iron-manganese catalysts maintain good activity and selectivity under low pressure reaction conditions in a slurry bubble column reactor.
Production of alcohols and olefins
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, (2008/06/13)
A process for producing alcohols and olefins from a feedstream containing H2 and CO2 comprises using an iron carbide-based catalyst. A co-catalyst, for example copper, and/or a promoter, for example potassium, may also be present.
Fischer-Tropsch hydrocarbon synthesis with high surface area Cu and K promoted reduced-carbided iron/manganese spinels
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, (2008/06/13)
Slurried, high surface area, Cu and Group IA or IIA dual metal promoted Mn-Fe spinels which are fully reduced and carburized provide exceptionally high catalytic activity and selectivity in the conversion of CO/H2 to alpha-olefins, particularly when reduced and carbided in-situ. These copper and Group IA or IIA metal promoted iron-manganese catalysts maintain good activity and selectivity under low pressure reaction conditions.
