Process for activating cobalt catalysts

The particle-like unreturned cobalt support Fischer * トロプシュ composition catalyst precursor containing the catalyst carrier which made cobalt impregnate is processed by 1st supply gas space-velocity SV1 predetermined and 1st heating-rate HR1 using pure water matter reducing gas, and the precursor returned partially is obtained. The above-mentioned carrier contains the cobalt oxide which can return the calcination state which it has the chemical-formula unit which each mol of the cobalt atom combined with the oxygen atom over 4/3 mol, and shows the cobalt oxide specific surface area in which reduction equivalent to the specific surface area of a CoO spinel at least is possible. Subsequently, the precursor returned partially is processed by 2nd supply gas space-velocity SV2 predetermined and 2nd heating-rate HR2 using pure water matter reducing gas, and the activated Fischer * トロプシュ support catalyst is acquired. However, in the case of SV2=SV1, in the case of HR2! =HR1 and HR2=HR1, it is SV2! =SV1 although it is SV2<=SV1 and/or HR2>=HR1.