Patent ID: 6559191
Filing Date: 2003-05-06
Classification: B01J,C07C,C10G,Y02P

Abstract:
A process for the catalytic hydrogenation of carbon monoxide to form a mixture or hydrocarbons in a reactor utilizing a particulate Dispersed Active Metal Catalyst (DAM) that is not immobilized, said catalyst comprising one or more members selected from the group consisting of Group VIII metals and copper, said process including enhancing the catalyst during operation of the reactor to produce said hydrocarbons by the following steps:a) withdrawing a mixture comprising hydrocarbons and a portion of said catalyst particles from the reactor; b) contacting the mixture with a hydrogen-containing gas at a temperature above the temperature in the reactor to reduce the hydrocarbon content thereof; c) forming a slurry of the catalyst particles in a suitable liquid; d) contacting the catalyst with an oxidizing agent at temperatures below about 200Â° C. thereby forming a partially oxidized catalyst precursor comprising metals and at least one of hydroxides thereof and oxides thereof; e) reducing said oxidized catalyst precursor with a hydrogen-containing gas at a temperature from about 200Â° C. to about 600Â° C. thereby reforming the catalyst; and f) returning the catalyst to the reactor.