Patent ID: 7732500
Filing Date: 2010-06-08
Classification: B01J,C10G

Abstract:
1. A process for the Fischer-Tropsch synthesis of hydrocarbons comprising the step of reacting a mixture of carbon monoxide and hydrogen in the presence of a particulate catalyst comprising a precipitated intimate mixture of precipitated cobalt and aluminum compounds in which the cobalt compounds are supported on cobalt-aluminum compounds, said mixture having a cobalt content ≧60% wt and a cobalt and aluminum at an atomic ratio in the range 10:1 to 2:1 (Co:Al), which when reduced at 425° C., has a cobalt surface area as measured by hydrogen chemisorption at 150° C. of at least 30 m 2 /g of catalyst wherein the catalyst is prepared by steps comprising: (i) precipitating an insoluble cobalt compound from an aqueous solution of a cobalt salt with an excess alkaline precipitating agent, (ii) adding a soluble aluminum compound, (iii) aging the resulting precipitate in suspended form, (iv) recovering and drying the catalyst composition, and (v) activating the catalyst by reduction using a hydrogen-containing gas.