Dehydrogenation and aromatization of methane in the absence of oxygen over doped M/HZSM-5 catalysts

摘要

The effects of additive and pretreatment temperature on the activity and stability of doped Mo/HZSM-5 catalysts for methane non- oxidative transformation to aromatics and C_2 hydrocarbons were investigated. The activity and selectivity of a Mo/HZSM-5 catalyst can be modified by the addition of a second metal component. The catalytic performance was very sensitive to the pretreatment temperature. A methane conversion of about 10/100 and a quite stable activity were obtained at the reaction temperature of 973 K over a Mo-Ru/HZSM-5 catalyst pretreated in air at a temperature of 873 K.