Partial Oxidation of Methane to Methanol over Heterogeneous Catalyst Co/ZSM-5

The catalytic activities of four types of Co/ZSM-5 zeolites in partial oxidation of methane were compared to observe the effect of pore size and cobalt species to the reaction. Two types of ZSM-5 structures: microporous and hierarchical; and two ways of Co loading: impregnation and ion exchange were studied. The catalytic test was performed at 423 K in a batch reactor (volume c.a. 200 cm3) with methane to N2 ratio of 0.5:2, and 0.5 g Co/ZSM-5 catalyst. The results show that the partial oxidation of methane was selective to methanol production for all four ZSM-5 zeolites. The hierarchical Co/ZSM-5 showed to give the highest conversion of methane to methanol.