Dehydrogenation of sec-butanol to methyl ethyl ketone over Cu-ZnO catalysts prepared by different methods: coprecipitation and physical mixing

摘要

Cu-ZnO catalysts prepared by coprecipitation and physical mixing methods were characterized to investigate the roles of ZnO by X-ray diffraction (XRD), N_2O chemisorption decomposition and evaluated for the vapor-phase dehydrogenation of sec-butanol (SBA) to methyl ethyl ketone (MEK). ZnO not only could disperse Cu species, but also prevent Cu from sintering. Cu-ZnO catalyst by coprecipitation method exhibited excellent reactivity.