Selectivity and mechanism of Fischer-Tropsch synthesis with iron and cobalt catalysts

The Fischer-Tropsch CO-hydrogenation has been comparatively performed on iron and cobalt in a gradientless tank reactor. Kinetic coefficients of elementary reactions and their dependence on pH 2 , Pco' ph 20 and T were determined with the help of a model for chain growth-, branching- and termination reactions. Changes of reaction rates of CO consumption, of methane formation, of chain propagation and chain branching are presented and discussed in terms of elemental surface reactions and characteristics of the catalyst base metals.