Process for preparing a fischer-tropsch catalyst

摘要

A process for preparing a cobalt-containing hydrocarbon synthesis catalyst includes, in a carbide formation step, treating an initial catalyst precursor comprising a catalyst support supporting cobalt and/or a cobalt compound, with a CO containing gas at a temperature T. T is from 200° C. to 280° C. The cobalt or cobalt compound is converted to cobalt carbide thereby obtaining a cobalt carbide containing catalyst precursor. The CO containing gas (when it contains H2) does not have a CO to H2 molar ratio equal to or less than 33:1. The carbide formation step is carried out under non-oxidative conditions. In a subsequent activation step, the cobalt carbide containing catalyst precursor is subjected to treatment with a hydrogen containing gas at a temperature T2. T2 is at least 300° C. The cobalt carbide is converted to cobalt metal thereby activating the cobalt carbide containing catalyst precursor and obtaining a cobalt-containing hydrocarbon synthesis catalyst.

主权项

1. A process for preparing a cobalt-containing hydrocarbon synthesis catalyst, which process includes
in a carbide formation step, treating an initial catalyst precursor comprising a catalyst support supporting cobalt, with a CO containing gas for longer than 1 hour at a temperature T1, where 210° C.