Catalysis Letters, Vol.24, No.3-4, 349-354, 1994
Synergic Enhancement Effect of Zirconium-Oxide, Cerium Oxide and Iron or Cobalt Oxide on the Formation of Isobutene from Co and H-2
Fe2O3 or Coo modified CeO2-ZrO2 catalysts lead to four times higher yield of hydrocarbons than ZrO2 with C-4 hydrocarbons selectivity of more than 50% and isobutene selectivity of more than 80%. XRD and XPS measurements suggested that the interaction of Fe or Co oxide with CeO2 causes the higher Ce3+ concentration with their higher oxidation state. Their combination with ZrO2 synergistically causes the active and selective formation of isobutene.