Co-processing CH4 and Oxygenates on Mo/H-ZSM-5 Catalysts

摘要

Methane, the primary component of natural gas, is chemically inert and its conversion to higher hydrocarbons involves the creation of C-C bonds and H2 elimination [1]. A representative pathway for the non-oxidative conversion of methane is dehydroaromatization (DHA) via high temperature pyrolysis over catalytic surfaces. Investigations of CH4 DHA reactions on Mo encapsulated ZSM-5 catalysts at temperatures ~950 K have reported 8-10% CH4 conversion with >70% selectivity to benzene [2–4]. We seek to couple CH4 dehydrogenation with deoxygenation of low molecular weight oxygenates using Mo/H-ZSM-5 formulations. Co-processing CH4 with oxygenates results in a higher H2/CH4 ratio which acts to shift the CH4 to C6H6 equilibrium but does not affect the forward rate of C6H6 formation.