Patent ID: 9687822
Date: 2017-06-27
CPC Classifications: B01J,C10G,Y02E

Claim:
1. A process for preparing a cobalt-containing hydrocarbon synthesis catalyst precursor, which process includes calcining a loaded catalyst support comprising a catalyst support supporting a cobalt salt to decompose the cobalt salt and/or to cause the cobalt salt to react with oxygen, the calcination thereby converting the cobalt salt into a cobalt oxide, the calcination including heating the loaded catalyst support over a heating temperature range of 90° C. to 220° C. using one or more high heating rate periods during the heating over the heating temperature range wherein heating of the loaded catalyst support takes place at a heating rate of at least 10° C./minute, and wherein a gas flow with a space velocity of at least 5 m one or more low heating rate periods during the heating over the heating temperature range wherein heating of the loaded catalyst support takes place at a heating rate of less than 6° C./minute, thereby to calcine the cobalt salt, with a cobalt-containing hydrocarbon synthesis catalyst precursor being prepared.