钙钛矿型氧化物催化剂SrTiO_3的甲烷氧化偶联反应性能的研究  

A Study on Catalytic Properties of Perovskite-type Oxide SrTiO_3 Catalysts for Oxidative Coupling of Methane

作　　者：缪建文[1,2] 范以宁[1] 金永漱[1] 陈懿[1] 

机构地区：[1]南京大学化学系 [2]南通师范学院化学系,南通226007

出　　处：《无机化学学报》2004年第8期967-970,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家重点基础研究发展规划项目(No.G1999022400);南京大学分析测试基金资助课题。

摘　　要：The structure and catalytic properties of SrTiO3 perovskite-type oxide catalysts for oxidative coupling of methane (OCM) have been studied by using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and microreactor tests. It has been shown that OCM catalytic properties of SrTiO3 catalysts are correlated to the Sr/Ti atomic ratio. Increasing Sr/Ti ratio in the perovskite?-type SrTiO3 catalysts results in the surface enrichment of Sr element, leading to the the higher content of adsorbed oxygen species on the surface of catalysts and thus higher C2 selectivity for OCM reaction.The structure and catalytic properties of SrTiO3 perovskite-type oxide catalysts for oxidative coupling of methane (OCM) have been studied by using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and microreactor tests. It has been shown that OCM catalytic properties of SrTiO3 catalysts are correlated to the Sr/Ti atomic ratio. Increasing Sr/Ti ratio in the perovskite-type SrTiO3 catalysts results in the surface enrichment of Sr element, leading to the the higher content of adsorbed oxygen species on the surface of catalysts and thus higher C-2 selectivity for OCM reaction.

关 键 词：钙钛矿型氧化物 催化剂 甲烷氧化偶联 催化性能 钛酸锶 

分 类 号：O623.11[理学—有机化学] O643.36[理学—化学]