Assessment of internal diffusion limitation on Fischer–Tropsch product distribution Original Research Article

A reactor is modeled for ideal vapor–liquid equilibrium (VLE) conditions and is operated with a single α catalyst. Under steady state conditions, the relative concentration of hydrocarbon product in the catalyst pores decreases with increasing carbon number until about C20. It is deduced that the two α product distribution in Fischer–Tropsch (FT) reactions is not due to the effect of product diffusion limitations of the heavier products.