Catalyst for the production of alcohols by hydrogenation of carboxylic acids and process for the preparation of the catalyst
AssigneeBP Chemicals Limited
InventorsMelanie Kitson, Peter S. Williams
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Abstract
An improved catalyst comprising a Group VIII noble metal, such as palladium, and rhenium is supported on a high surface area graphitized carbon. In an embodiment the Group VIII metal, e.g., palladium, has an average crystallite size in the range from 30 to 150 Angstroms. A process for making a catalyst is provided in which a support is impregnated with a solution of a Group VIII metal compound, the solvent is removed and the Group VIII metal impregnated support is impregnated with a solution of a rhenium compound using a solvent in which the Group VIII metal compound is insoluble, and thereafter the solvent is removed.
Claims6
A process for the production of a catalyst which process comprises the steps of
- (A) impregnating a support with a solution comprising a solvent and a soluble Group VIII noble metal compound thermally decomposable/reducible to the Group VIII noble metal and subsequently removing the solvent therefrom, and
- (B) impregnating the Group VIII metal impregnated support with a solution, in a solvent in which the Group VIII metal is substantially insoluble, of a soluble rhenium compound thermally decomposable/reducible to rhenium metal and/or oxide and thereafter removing the solvent therefrom.
A catalyst for comprising palladium and rhenium supported on a high surface area graphitised carbon wherein the average palladium crystallite size is in the range from 30 to 99.9 Angstroms.
Dependencies are inferred from the claim text.