Patent ID: 6787577
Filing Date: 2004-09-07
Classification: B01J,C10G

Abstract:
A process for preparing a C5 plus product with high branching from a slurry-type Fischer-Tropsch unit comprising:(a) contacting a synthesis gas feed stock in a Fischer-Tropsch reaction zone with a potassium promoted iron catalyst that is substantially free of alumina under slurry-type Fischer-Tropsch reaction conditions, wherein the catalyst is prepared by the co-precipitation of iron and silica, the atomic ratio of iron to potassium in the catalyst is within the range of about 3 to about 15 atoms of potassium per 100 atoms of iron, the atomic ratio of iron to silicon in the catalyst is within the range of about 1 to about 10 atoms of silicon 100 atoms of iron, and the particle size is within the range of from about 30 microns and about 150 microns; and (b) recovering from the Fischer-Tropsch reaction zone a C5 plus Fischer-Tropsch product having at least 20 mole percent branching.