摘要 : A novel route for methane conversion to higher hydrocarbons over Mo/HZSM-5 catalysts without adding O_2 is reported. The product is mainly benzene and is formed via oligomerization of ethylene. This reaction proces probably occurs... 展开 A novel route for methane conversion to higher hydrocarbons over Mo/HZSM-5 catalysts without adding O_2 is reported. The product is mainly benzene and is formed via oligomerization of ethylene. This reaction proces probably occurs on two remotely separated active sites. Ethylene is initially formed as the primary product on the externally loaded Mo active sites while aromatic products are formed on the Bronsted acid sites in the channel systems. In order to relate these two processes, an intermediate diffusion process involving ethylene from the external surface into the channel systems is proposed. 收起