高乙烯选择性的ODE反应催化剂Y_2O_3-LaF_3的XPS研究

Abstract

高乙烯选择性的OdE反应催化剂y2O3-lAf3的XPS研究罗继忠万惠霖＊＊（厦门大学化学系固体表面化学物理国家重点实验室厦门361005）关键词稀土氟化物氧化钇结构缺陷乙烷氧化脱氢XPS低碳烷烃临氧转化制烯烃越来越为人们所重视。近十几年来，由乙烷...

Y 2O 3-LaF 3 catalysts,especially Y 2O 3-LaF 3(1:3 in molar) show very high ethylene selectivity For the oxidative dehydrogenation of ethane.The change of the binding energies of La3d 5/2 and Y3d 5/2 in Y 2O 3-LaF 3 series catalysts show that Y 2O 3 and LaF 3 might interact with each other.The Formation of structure deFects such as O - and/or anionic vacancies as well as the isolation Function of LaF 3 in Y 2O 3 might responsible For the high ethylene selecrivity.