Hydrogenation catalyst and process for preparing same
First Claim
1. A catalyst in powdered form consisting essentially of the oxides of copper, iron, aluminum and manganese wherein the atomic ratio of copper to iron is at least 1:
- 1;
wherein said catalyst contains at least about 1% by weight each of manganese and aluminum and the atomic ratio of copper to aluminum is at least about 1;
1.
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Abstract
In one embodiment, the invention relates to a catalyst in powdered form comprising the oxides of copper, iron, aluminum and manganese wherein the atomic ratio of copper to iron is at least 1:1. In another embodiment, the invention relates to a process for preparing such hydrogenation catalysts which comprises the steps of
(A) preparing a first aqueous solution containing at least one water-soluble copper salt, at least one water-soluble iron salt, and at least one water-soluble manganese salt;
(B) preparing a second solution containing at least one water-soluble basic aluminum salt and at least one alkaline precipitating agent;
(C) mixing the first and second solutions wherein an insoluble solid is formed;
(D) recovering the soluble solid; and
(E) calcining the recovered solid to form the desired catalyst.
The invention also relates to a process for hydrogenating aldehydes, ketones, carboxylic acids and carboxylic acid esters.
33 Citations
23 Claims
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1. A catalyst in powdered form consisting essentially of the oxides of copper, iron, aluminum and manganese wherein the atomic ratio of copper to iron is at least 1:
- 1;
wherein said catalyst contains at least about 1% by weight each of manganese and aluminum and the atomic ratio of copper to aluminum is at least about 1;
1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- 1;
-
12. A catalyst in powdered form consisting essentially of the oxides of copper, iron, aluminum and manganese wherein the atomic ratio of copper to iron is from about 4:
- 1 to about 6;
1, the atomic ratio of copper to aluminum is from about 1;
1 to about 3;
1, and the catalyst contains from about 1 to about 10% by weight of manganese and from about 1 to about 10% by weight aluminum. - View Dependent Claims (13, 14, 15)
- 1 to about 6;
-
16. A process for preparing a hydrogenation catalyst consisting essentially of the oxides of copper, iron, aluminum and manganese which comprises the steps of
(A) preparing a first aqueous solution containing at least one water-soluble copper salt, at least one water-soluble iron salt, and at least one water-soluble manganese salt wherein the atomic ratio of copper to iron in the first aqueous solution is at least 1: - 1, the amount of manganese contained in the first aqueous solution is an amount sufficient to provide a final catalyst containing at least about 1% by weight of manganese and the atomic ratio of copper to aluminum is at least about 1;
1;(B) preparing a second solution containing at least one water-soluble basic aluminum salt and at least one alkaline precipitating agent, the amount of aluminum contained in the second solution is an amount sufficient to provide a catalyst containing at least about 1% aluminum; (C) mixing the first and second solutions whereby an insoluble solid is formed; (D) recovering the insoluble solid; and (E) calcining the recovered solid to produce said catalyst in oxide form. - View Dependent Claims (17, 18, 19, 20, 21)
- 1, the amount of manganese contained in the first aqueous solution is an amount sufficient to provide a final catalyst containing at least about 1% by weight of manganese and the atomic ratio of copper to aluminum is at least about 1;
-
22. A process for preparing a hydrogenation catalyst consisting essentially of the oxides of copper, iron, aluminum and manganese which comprises the steps of
(A) preparing a first aqueous solution containing at least one water-soluble copper salt, at least one water-soluble iron salt, and at least one water-soluble manganese salt in an amount sufficient to provide an atomic ratio of copper to iron of from about 3: - 1 to about 6;
1, and an atomic ratio of copper to manganese of from about 2;
1 to about 20;
1, the amount of manganese contained in the first aqueous solution is an amount sufficient to provide a final catalyst containing at least about 1% by weight of manganese;(B) preparing a second solution containing at least one water-soluble basic aluminum salt and at least one alkaline precipitating agent, the amount of aluminum contained in the second solution is an amount sufficient to provide a catalyst containing at least about 1% by weight aluminum; (C) simultaneously mixing the first and second solutions in a vessel containing water and calcium silicate whereby an insoluble solid is formed; (D) recovering the insoluble solids; and (E) calcining the recovered solid to produce said catalyst in oxide form. - View Dependent Claims (23)
- 1 to about 6;
Specification