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AssigneeExxonMobil Research and Engineering Company
InventorsJanet Renee Clark, Michel Daage, Russell John Koveal
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A process for activating a supported metal catalyst or catalyst precursor useful for the hydrogenation of carbon monoxide to form a mixture of hydrocarbons, comprising reducing with a hydrogen-containing gas at elevated temperature so that at least a portion is in the metallic state, impregnating under a non-oxidizing atmosphere with a solution of at least one member selected from the group consisting of ammonium salts, alkyl ammonium salts and weak organic acids, optionally further including ammonia, to the point where it has absorbed a volume of solution equal to at least about 10% of its calculated pore volume, oxidizing with a gaseous oxidant in the presence of the impregnating solution and reducing with hydrogen-containing gas at elevated temperatures to form an active catalyst. The steps beginning with the impregnation may be repeated. Optionally, the catalyst may be calcined after the oxidation step and/or passivated after activation.
A process for activating a supported catalyst or supported catalyst precursor, comprising one or more members selected from the group consisting of Co, Ni, Cu, Ru, Rh, Re, Pd, Pt, Os and Ir, the process comprising:
A process in accordance with claim 7, wherein the amount of said impregnating solution utilized in step b) is from about 30% to 200% of the calculated pore volume of the catalyst.
An activated supported metal catalyst for the catalytic hydrogenation of carbon monoxide, said catalyst comprising one or more members selected from the group consisting of Co, Ni, Cu, Ru, Rh, Re, Pd, Pt, Os and Ir, the activity of said catalyst being enhanced by a process comprising:
Dependencies are inferred from the claim text.