Catalytic Partial Oxidation of Methane to Synthesis Gas - Catalysis and Reaction Engineering

摘要

Mechanistic studies on the partial oxidation of methane to synthesis gas have given strong indications that CO_2 is a primary product when using supported metal catalysts (Ru/gamma-Al_2O_3, Pd/gamma/Al_2O_3, Pt/gamma-Al_2O_3, Ni/gamma-Al_2O_3, Rh/gamma-Al_2O_3, Pt/MgO, Rh/MgO, Rh/ZrO_2) as well as Rh powder. CO_2 reacts in a reverse Boudouard reaction with carbon species resulting from methane dissociation to CO. The CO selectivity and the extent of carbon accumulation on the catalyst surface depends on metal-support interaction. CO and H_2 selectivity as well as carbon accumulation are also affected by hydrodynamics. Results of fluidized bed reactor operation are communicated.