Characteristic feature of Co/SiO2 catalysts for slurry phase Fischer-Tropsch synthesis

Cobalt-based catalysts showing high Fischer-Tropsch reaction activity in sl urry-phase semi-batch reactor are studied. CO conversion increases with inc reasing cobalt loading, and chain growth probability increases as well. It is found that catalytic activity shows a linear relationship with the surfa ce cobalt amount. At high cobalt loadings, two kinds or cobalt metal crysta llites, cubic and hexagonal, exist, the cubic crystallite being predominant . The effects of reaction conditions, catalyst pore sizes, calcination and reduction temperatures are studied.