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US 4,057,513 AGranted
Hydrogenation catalyst and process for preparing same
AssigneeBayer Aktiengesellschaft
InventorsWolfgang Biedermann, Horst Koller
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AssigneeBayer Aktiengesellschaft
InventorsWolfgang Biedermann, Horst Koller
Estimating the term…
A hydrogenation catalyst containing cobalt, manganese and copper in the form of their oxides and alkali metal oxide and silicon dioxide. A weight ratio of cobalt to maganese is 25:1 to 1:1, and the copper content is 0.01 to 2% by weight based on a total weight of the catalyst. The catalyst is prepared by adding an excess of an aqueous solution of a hydroxide, bicarbonate or carbonate of an alkali metal to an aqueous solution of water-soluble cobalt salts, manganese-(II) salts and copper salts to form a precipitate. Thereafter an aqueous solution of an alkali metal silicate or SiO.sub.2 sol is added to the precipitate which is filtered off and washed with water to remove excess alkali metal hydroxide, bicarbonate or carbonate. The precipitate is then dried and calcined to form the catalyst.
Catalyst comprising cobalt manganese and copper in the form of their oxides, an alkali metal oxide and silicon dioxide, the weight ratio of cobalt to manganese being 25:1 to 1:1, the copper content being 0.01 to 2 percent by weight based on the total weight of catalyst, the amounts of metals in each case being calculated as metals.
Process for preparing a catalyst which comprises adding an excess of an aqueous solution of a hydroxide, bicarbonate or carbonate of an alkali metal to an aqueous solution of water-soluble cobalt salts, manganese-(II) salts and copper salts to form a precipitate, adding an aqueous solution of an alkali metal silicate or SiO.sub.2 sol to the precipitate, filtering off the precipitate and washing with water to remove excess alkali metal hydroxide, bicarbonate or carbonate, and thereafter drying and calcining the precipitate.
Process for preparing a catalyst which comprises adding aqueous ammonia or ammonium carbonate solution to an aqueous solution of water-soluble cobalt salts, manganese-(II) salts and copper salts to form a precipitate, adding an aqueous solution of an alkali metal salt or an appropriate amount of solid alkali metal salt to the precipitate, further adding an aqueous solution of an alkali metal silicate or SiO.sub.2 sol to the precipitate, filtering off the precipitate and drying and calcining same.
Dependencies are inferred from the claim text.