Battelle Development Corporation

Surjit Singh Khera

A gaseous (C.sub.1 to C.sub.4) hydrocarbon mixture having a high methane content (at least 80 percent by volume on a carbon dioxide-free basis) is obtained by passing a mixture of hydrogen and carbon monoxide at a volume ratio of about 47:53 to 60:40 at a temperature between about 350.degree. to about 450.degree. C. and a pressure of about 200 p.s.i.g. to about 10,000 p.s.i.g. at a volumetric space velocity of about 500 to about 6000 in contact with a sulfur resistant catalyst comprising an interspersed mixture of cobalt oxide, aluminum oxide and zinc oxide. The catalyst comprises about 1 to about 15 weight percent of cobalt oxide, about 15 to about 60 weight percent of aluminum oxide and about 35 to about 70 weight percent of zinc oxide. In preparing the catalyst, the cobalt, aluminum and zinc can be separately precipitated as the corresponding hydroxides and then admixed prior to calcination or two or more of such metals can be coprecipitated as the hydroxides at a controlled pH with ammonium hydroxide from the corresponding aqueous nitrate or acetate solutions. The admixed hydroxides of cobalt, aluminum and zinc are then dried and calcined.

Catalyst for synthesizing a gaseous hydrocarbon mixture having a high

Low boiling (C.sub.1 to C.sub.4) aliphatic hydrocarbons are obtained by passing a mixture of hydrogen and carbon monoxide at a molar ratio of about 1:2 to 2:1 at a temperature between about 350.degree. and about 450.degree. C. and a pressure of about 600 p.s.i.g. to about 10,000 p.s.i.g. at a volumetric hourly space velocity of about 200 to about 6000 in contact with catalyst comprising a sulfided, interspersed mixture of cobalt oxide, aluminum oxide and zinc oxide. The catalyst, prior to sulfiding, comprises about 1 to about 15 weight percent of cobalt oxide, about 55 to about 85 weight percent of aluminum oxide and about 15 to about 30 weight percent of zinc oxide. In preparing the catalyst, the cobalt, aluminum and zinc can be separately precipitated as the corresponding hydroxides and then admixed prior to calcination, or two or more of such metals can be coprecipitated as the hydroxides at a controlled pH with ammonium hydroxide from the corresponding aqueous nitrate solutions and then admixed with each other. The admixed hydroxides of cobalt, aluminum and zinc are then dried, calcined and sulfided. The sulfur content of the catalyst by elemental analysis, comprises about 2.0 to 12.0 percent by weight of the final catalyst composition.

Catalyst for synthesizing low boiling aliphatic hydrocarbons from carbon

Process for synthesizing low boiling aliphatic hydrocarbons from carbon

Low boiling (C.sub.1 to C.sub.3) aliphatic hydrocarbons are obtained by passing a mixture of hydrogen and carbon monoxide at a volume ratio of about 45:55 to 60:40 at a temperature between about 350.degree. and about 500.degree. C. and a pressure of about 200 p.s.i.g. to about 10,000 p.s.i.g. at a volumetric hourly space velocity of about 200 to about 6000 in contact with a catalyst comprising an interspersed mixture of cobalt oxide, aluminum oxide, zinc oxide and molybdenum oxide. The catalyst comprises about 0.2 to about 2.0 weight percent of cobalt oxide, about 55 to about 95 weight percent of aluminum oxide, about 5 to about 15 weight percent of zinc oxide and about 2 to about 20 weight percent of molybdenum oxide. In preparing the catalyst, the cobalt, aluminum and zinc can be precipitated separately as the corresponding carbonates or hydroxides and then admixed with ammonium paramolybdate prior to calcination or two or more of the metals such as cobalt, aluminum and zinc can be coprecipitated as the carbonates or hydroxides at a controlled pH with sodium carbonate or ammonium hydroxide from the corresponding aqueous nitrate or acetate solutions and thereafter admixed with ammonium paramolybdate and any remaining metal salt, such as, for example, cobaltous nitrate or zinc hydroxide. The admixed salts of cobalt, aluminum, zinc and molybdenum are then dried and calcined.

Process and catalyst for synthesizing low boiling (C1 to C3) aliphatic

A gaseous (C.sub.1 to C.sub.4) hydrocarbon mixture having a high methane content (at least 80 percent by volume on a carbon dioxide-free basis) is obtained by passing a mixture of hydrogen and carbon monoxide at a volume ratio of about 47:53 to 60:40 at a temperature between about 350.degree. and about 450.degree. C. and a pressure of about 200 p.s.i.g. to about 10,000 p.s.i.g. at a volumetric space velocity of about 500 to about 6000 in contact with a sulfur resistant catalyst comprising an interspersed mixture of cobalt oxide, aluminum oxide and zinc oxide. The catalyst comprises about 1 to about 15 weight percent of cobalt oxide, about 15 to 60 weight percent of aluminum oxide and about 35 to about 70 weight percent of zinc oxide. In preparing the catalyst, the cobalt, aluminum and zinc can be separately precipitated as the corresponding hydroxides and then admixed prior to calcination or two or more of such metals can be coprecipitated as the hydroxides at a controlled pH with ammonium hydroxide from the corresponding aqueous nitrate or acetate solutions. The admixed hydroxides of cobalt, aluminum and zinc are then dried and calcined.

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Upper Arlington, OH, United States of America

Surjit Singh Khera