Patent ID: 6716886
Filing Date: 2004-04-06
Classification: B01J,C10G

Abstract:
A process for producing higher hydrocarbons by the hydrogenation of carbon monoxide by reaction with hydrogen at reaction conditions in the presence of a dispersed active metal (DAM) catalyst prepared by:a) forming a slurry of particulate DAM catalyst characterized by the capacity to form more than one oxide in a suitable fluid; b) contacting the particulate DAM catalyst in the slurry with an oxidizing agent at temperatures below 200Â° C. for a time such that the metals no longer exhibit uncontrollable pyrophoricity, thereby forming an oxidized catalyst precursor comprising said metals and at least one of hydroxides thereof and oxides thereof, wherein at least a portion of said hydroxides and oxides are in the lower oxidation state of the metals; c) adding to said oxidized catalyst precursor a solution in a suitable solvent of one or more reducible salts of promoter metals selected from the group of rhenium, ruthenium, palladium, iron and cobalt; d) recovering and drying said oxidized catalyst precursor and said salt; and c) forming an active catalyst by treating the oxidized catalyst precursor with hydrogen at elevated temperature, wherein said one or more salts will be reduced during the hydrogen treatment to form the metal.