Catalytic Reactivity for the Formation of Dimethyl Ether from Synthesis Gas over Hybrid Catalysts

摘要

A composition of Cu/ZnO-based hybrid catalyst was prepared by coprecipitation method. The catalytic properties and reactivities were investigated. Catalytic synthesis of dimethyl ether(DME) from syngas (H_2/CO) was evaluated in a fixed bed reactor. The catalytic conversion of CO and H_2 to DME was also investigated over two solid-acid catalysts using γ-Al_2O_3 and Na/ZSM-5. It was found that reactivities of DME synthesis depend on the acid composition and reaction temperature. Thus, DME selectivity can be efficiently controlled by the acid composition in hybrid catalysts.