Catalytic Oxidative Dehydrogenation of Propaneand Isobutane over Rare Earth Oxyfluorides

稀土氟氧化物在丙烷、异丁烷氧化脱氢中的催化作用张伟德＊洪碧凤古萍英万惠霖蔡启瑞（厦门大学化学系，固体表面物理化学国家重点实验室，物理化学研究所厦门361005）关键词丙烷，异丁烷，催化氧化脱氢，稀土氟氧化物1997-10-06收稿，1998-01-0...Three rare earth oxyfluorides Sm2O3/4CeF3, Nd2O3/4CeF3 and Y2O3/4CeF3 were prepared.They were active in oxidative dehydrogenation of propane and isobutane with high selectivity to propene and isobutene.The propane is easier to dehydrogenate than isobtuane, and the isobutane is easier to crack.XRD measurements indicated the existence of new phase such as CeO2 and REF3 or REof as a result of the exchange between F- and O2- during the preparation.The insitu Raman spectra implied that O-2 was the active species.国家自然科学基