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. In an embodiment of this invention reaction of acetic acid and hydrogen over a platinum and tin supported on silica, graphite, calcium silicate or silica-alumina selectively produces ethanol in a vapor phase at a temperature of about 250°C.

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

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. In an embodiment of this invention reaction of acetic acid and hydrogen over either cobalt and palladium supported on graphite or cobalt and platinum supported on silica selectively produces ethanol in a vapor phase at a temperature of about 25O0C.

Ethanol production from acetic acid utilizing a cobalt catalyst

A process for selective formation of ethanol from acetic acid includes contacting a feed stream containing acetic acid and hydrogen at an elevated temperature with catalyst comprising platinum and tin on a high surface area silica promoted with calcium metasilicate Selectivities to ethanol of over 85% are achieved at 280° C with catalyst life in the hundreds of hours

Tunable catalyst gas phase hydrogenation of carboxylic acids

Catalysts and processes for forming catalysts for use in hydrogenating acetic acid to form ethanol. In one embodiment, the catalyst comprises a first metal, a silicaceous support, and at least one metasilicate support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

Catalysts for making ethanol from acetic acid

A process for selective formation of ethanol from acetic acid by hydrogenating acetic acid in the presence of first metal, a silicaceous support, and at least one support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

Processes for making ethanol from acetic acid

Supported catalysts containing nickel, magnesium oxide and, if desired, further additives, which contain reduced Mg and Ni in a molar ratio of (0.0075 to 0.075):1. The catalyst also have an active nickel metal surface area of 110 to 180 m2 /g of Ni, and a BET total surface area of 160 to 450 m2 /g. The invention furthermore relates to a process for the preparation of the catalysts and to their use as catalysts for the hydrogenation of aliphatic and/or aromatic hydrocarbons.

Supported catalysts and a process for their preparation

A process for the preparation of a compound comprising precipitation from an aqueous solution of a mixture of nickel, aluminum, and zirconium salts by means of an aqueous precipitating solution. The latter contains an amount of a basic compound which is in stoichiometric excess of that required for complete precipitation of the salts. The precipitation is carried out at at least 60° C. and a pH of 7 to 10. A catalyst which is the product of the foregoing process, as well as its use in the hydrogenation of nitriles, aromatic hydrocarbons, nitro compounds, and/or olefins is also disclosed.

Process for the preparation of catalyst compositions containing nickel, alumina, and zirconium dioxide and catalysts made therefrom

The invention relates to a hydrogenation catalyst comprising nickel, nickel oxide, magnesium oxide, sodium oxide and a water-insoluble support material, said hydrogenation catalyst containing from 25 to 50% by weight of nickel (metallic) from 10 to 35% by weight of nickel oxide from 4 to 12% by weight of magnesium oxide from 1 to 5% by weight of sodium oxide remainder support material, where the total of nickel and nickel oxide is from 40 to 70% by weight, and having a surface area determined by BET from 80 to 200 m2/g and a total pore volume determined by Hg porosimetry from 0.35 to 0.6 ml/g, with the total pore volume being made up of from 30 to 60% by volume having a pore radius of ~ 40 .ANG., from 4 to 10% by volume having a pore radius of > 40 to 300 .ANG., from 30 to 60% by volume having a pore radius of > 300 to 5000 .ANG.. A process for preparing the hydrogenation catalyst is also provided, which process comprises preparing, in a precipitation step, a green catalyst from nickel salt, magnesium salt and sodium carbonate and also a support material, slurrying this green catalyst, after separating off the mother liquor and partial washing in alkali solution, separating it from the liquid phase, drying and treating the dried green catalyst with hydrogen until from 42 to 83% by weight of the total nickel content is present in metallic form. The hydrogenation catalyst of the invention is particularly suitable for the hydrogenation of propanal, n-butanal and i-butanal at temperatures between 100 and 160°C.

Hydrogenation catalyst, a process for its preparation and the use thereof

A process for the preparation of alcohols by reaction of organic carbonyl compounds or mixtures containing them with hydrogen over a supported catalyst containing nickel, aluminum oxide, and zirconium dioxide at elevated temperature and, if appropriate, under elevated pressure. Ketones, aldehydes and derivatives thereof are reacted as the carbonyl compounds at temperatures of 60° to 150° C.

One stage process for the preparation of alcohols

The present invention relates to supported catalysts which contain nickel, magnesium oxide and optionally further additives, with Mg and Ni in a reduced form in a molar ratio of (0.0075 to 0.075):1, and have an active nickel metal surface area of 110 to 180 m /g of Ni and a BET total surface area of 160 to 450 m /g of catalyst. The invention also relates to a process for preparing the catalysts and to their use as catalyst for the hydrogenation of aliphatic and/or aromatic hydrocarbons.

Supported catalysts and their preparation process

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