Patent ID: 7585812
Filing Date: 2009-09-08
Classification: B01J,C10G

Abstract:
1. A method for making a catalyst for use in a Fischer-Tropsch process, the catalyst comprising at least one metal that is an efficient carbon monoxide adsorber and at least one promoter dispersed on a support to form a plurality of catalyst particles, the catalyst particles having a BET surface area from about 100 m 2 /g to about 250 m 2 /g and an essentially smooth, homogenous surface morphology, the metal and promoter being dispersed on the support such that the catalyst has a metal oxide crystalline size from about 40 Å to about 200 Å, the method comprising: a) adding the support to water with agitation to form a slurry and maintaining the slurry at a temperature from about 35° C. to about 210° C.; b) adding an aqueous metal salt solution to the slurry with agitation while maintaining the slurry temperature from about 65° C. to about 120° C., wherein the aqueous metal salt solution has a pH value greater than a point of zero charge of the support; c) agitating the slurry and maintaining the slurry temperature from about 65° C. to about 120° C. until the metal salt is essentially completely reacted with the support; d) separating the slurry into a solid portion and a liquor portion; e) washing the solid portion with water; f) drying and calcining the solid portion from about 90° C. to about 375° C. to form a plurality of catalyst particles; g) impregnating the catalyst particles with at least one promoter; and h) reducing the catalyst particles by heating the particles from ambient temperature to a temperature ranging from about 300° C. to about 500° C. at a rate of from about 0.1° C./min to about 10° C./min over a period ranging from about 5 hours to about 41 hours.