Water addition for increased CO/H.sub.2 hydrocarbon synthesis activity over catalysts comprising cobalt, ruthenium and mixtures thereof which may include a promoter metal
AssigneeExxon Research & Engineering Co.
InventorChang J. Kim
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Abstract
The addition of water into a Fischer-Tropsch hydrocarbon synthesis reaction zone employing passing a CO and H.sub.2 feed mixture over a catalyst comprising cobalt, ruthenium and mixtures thereof preferably on a titania support and which may include a promoter metal, that results in 90% CO conversion to hydrocarbons and increased C.sub.5 + hydrocarbon selectivity, along with a decrease in methane production.
Claims10
A once-through, fixed or slurry bed Fischer Tropsch process with enhanced CO conversion activity and C.sub.5 + liquid hydrocarbon selectivity comprising contacting a feed mixture of carbon monoxide and hydrogen in a reaction zone with about 1 Vol % to about 70 Vol % water based on the total volume of feed mixture, at a pressure above one atmosphere and a temperature ranging from about 150.degree. C. to about 300.degree. C., with a catalyst selected from the group consisting of cobalt, ruthenium, and mixtures thereof on a titania support, wherein said titania support is less than 40 m.sup.2 /g, converting at least 90 Vol % of the carbon monoxide to liquid hydrocarbons, and in the substantial absence of CO.sub.2 formation.
Dependencies are inferred from the claim text.