La-Ba-Sn(Sm,Ce)体系催化剂上的甲烷氧化偶联  

Oxidative Coupling of Methane over La Ba Sn(Sm, Ce) Catalysts

作　　者：朴红[1] 宿美平[1] 毕颖丽[1] 甄开吉[1] 

机构地区：[1]吉林大学化学系

出　　处：《高等学校化学学报》1998年第2期261-264,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：报道了Ｌａ－Ｂａ－Ｓｎ（Ｓｍ，Ｃｅ）体系催化剂上甲烷氧化偶联反应（ＯＣＭ）的催化性能．实验结果表明：第三组分Ｓｎ、Ｓｍ、Ｃｅ的添加显著提高了ＯＣＭ催化活性和Ｃ２烃选择性．不同催化剂制备方法对催化活性的影响不同，混浆法低温焙烧有利于低温ＯＣＭ反应；干混法高温焙烧能在最佳ＯＣＭ反应条件下获得较高的Ｃ２烃收率和选择性．The catalytic performance of La Ba Sn(Sm,Ce) system catalysts was investigated. The results showed that the addition of Sn, Sm and Ce components significantly improved the catalytic activities and C 2 selectivities for OCM, Furthermore, low calcination temperature was favorable for the low temperature OCM reaction, and high C 2 yields and selectivities were obtained at high calcination temperature and under optimum reaction conditions. In combination with XRD, XPS analysis, it can be concluded that the third components are highly dispersed in the bulk of the catalysts, which is responsible for the OCM.

关 键 词：氧化镧 氧化锡 氧化钐 铈 催化剂 甲烷氧化偶联 

分 类 号：O643.36[理学—物理化学] O623.11[理学—化学]