Patent ID: 6740621
Filing Date: 2004-05-25
Classification: B01J,C07C,C10G

Abstract:
A cobalt-on-&ggr;-alumina catalyst having improved attrition resistance for Fischer-Tropsch hydrocarbon synthesis, said cobalt-on-&ggr;-alumina catalyst being produced by a method comprising the steps of:(a) calcining a boehmite material at a temperature and for a time effective to convert at least most of the boehmite material to a &ggr;-alumina support material; (b) treating said &ggr;-alumina support material with an acidic aqueous solution; and then (c) forming said cobalt-on-&ggr;-alumina catalyst by depositing cobalt on said &ggr;-alumina support in an amount effective to catalyze said Fischer-Tropsch hydrocarbon synthesis, wherein said &ggr;-alumina support material is treated in step (b), prior to depositing said cobalt in step (c), with said acidic aqueous solution at an acidity level effective for increasing the attrition resistance of said cobalt-on-&ggr;-alumina catalyst for said Fischer-Tropsch hydrocarbon synthesis.