Mo-v-m-o (m = Ni, Cu, Zn, Sb, Ta) Mixed Metal Oxides Prepared By Solid-solid Reactions For Oxidative Dehydrogenationof Isobutane

摘要

Oxidative dehydrogenation of isobutane to isobutene was investigated over MoVO and MoVMO (M = Ni, Cu, Zn, Sb, Ta) mixed metal oxide catalysts prepared by solid-solid reactions. All catalysts were characterized by XRD and BET techniques. The addition of Ni, Zn, Cu, Sb and Ta improved the activity of Mo-V-O catalyst and decreased the isobutene selectivity, but the overall yield was in all cases improved. The optimal performance towards isobutene yield was found for Mo-V-Sb-O and Mo-V-Ta-O systems.