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Patent

Platinum group metal alloy catalysts for hydrogenation of carboxylic acids and their anhydrides to alcohols and/or esters

Melanie Kitson, +1 more
TLDR
In this article, an alloy of at least one noble metal of group VIII of the Periodic Table and a metal capable of alloying with the group VIII noble metal was used for producing an alcohol and/or a carboxylic acid ester.
Abstract: 
Catalyst composition comprising an alloy of at least one noble metal of group VIII of the Periodic Table and at least one metal capable of alloying with the group VIII noble metal, admixed with a component comprising at least one of the metals rhenium, tungsten or molybdenum, used for producing an alcohol and/or a carboxylic acid ester by reacting hydrogen with a carboxylic acid or anhydride thereof.

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Citations
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Patent

Direct and selective production of ethanol from acetic acid utilizing a platinum/tin catalyst

Victor J. Johnston, +4 more
TL;DR: In this paper, a process for the selective production of ethanol by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form ethanol is disclosed and claimed, and an embodiment of this reaction is presented.
Patent

Ethanol production from acetic acid utilizing a cobalt catalyst

Victor J. Johnston, +6 more
TL;DR: In this paper, a process for the selective production of ethanol by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form ethanol is disclosed and claimed, and an embodiment of this reaction is presented.
Patent

Tunable catalyst gas phase hydrogenation of carboxylic acids

Heiko Weiner, +3 more
TL;DR: In this paper, a process for the selective formation of ethanol from acetic acid is described, where a feed stream containing hydrogen at an elevated temperature with catalyst comprising platinum and tin on a high surface area silica promoted with calcium metasilicate.
Patent

Catalysts for hydrogenation of carboxylic acid

Konishi Mitsuo, +1 more
TL;DR: In this article, a method for hydrogenating a carboxylic acid, comprising an activated carbon having carried thereon an active metal species comprising ruthenium and tin, exhibits specific pore characteristics.
Patent

Ethylene production from acetic acid utilizing dual reaction zone process

Victor J. Johnston, +4 more
TL;DR: In this paper, a process for the selective formation of ethylene from acetic acid is described, which involves contacting a feed stream containing acetic acids and hydrogen at an elevated temperature with a first catalytic composition including a suitable hydrogenating catalyst in a first reaction zone to form an intermediate mixture including ethanol and ethyl acetate; and subsequently reacting the intermediate mixture over a suitable dehydrating and/or cracking catalyst to form ethylene.
References
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Patent

The catalysed hydrogenation of carboxylic acids and their anhydrides to alcohols and/or esters

Melanie Kitson, +1 more
TL;DR: In this article, an alcohol and/or a carboxylic acid ester is produced from an acid or anhydride by reacting the acid with hydrogen at elevated temperature in the presence as catalyst of a composition comprising an alloy of (i) at least one noble metal of Group VIII of the Periodic Table and (ii) one metal capable of alloying with the Group VIII noble metal.
Patent

Continuous preparation of ethanol

Ludwig Dr. Schuster, +7 more
TL;DR: Ethanol is prepared by hydrogenating acetic acid under superatmospheric pressure and at elevated temperatures by a process wherein a predominantly cobalt-containing catalyst is used and acetic acids and hydrogen are passed through the reactor, at from 210° to 330° C. and under conditions such that a liquid phase in not formed during this procedure.
Patent

Alcohols production by hydrogenation of carboxylic acids

Melanie Kitson, +1 more
TL;DR: Ethanol is produced from acetic acid or propanol from propionic acid by contacting either acid or acid with hydrogen at elevated temperature and a pressure in the range from 1 to 150 bar in the presence of a catalyst comprising as essential components (i) a noble metal of Group VIII of the Periodic Table of the Elements, and (ii) rhenium, optionally on a support, for example a high surface area graphitized carbon as mentioned in this paper.
Patent

Platinum alloy electrocatalyst and acid-electrolyte fuel cell electrode using the same

Takashi Ito, +2 more
TL;DR: A platinum alloy electrocatalyst, composed of a platinum-copper alloy containing 15 to 50 atomic percent of copper (the balance being platinum) and supported on a suitable carrier, shows high activity over long periods because of the enhanced specific activity of supported metal and improved maintainability of its specific surface area as discussed by the authors.
Patent

Process for the manufacture of 1-4-butanediol and tetrahydrofuran

Frederick A. Pesa, +1 more
TL;DR: In this paper, maleic anhydride is hydrogenated to tetrahydrofuran and/or 1,4-butanediol by a process comprising contacting the hydrocarbons with hydrogen at hydrogenation conditions in the presence of less than 25 wt. % water, based on the weight of the hydrocarbon, and a ruthenium-containing hydrogenation catalyst.