高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (2): 261.

• 论文 • 上一篇    下一篇

La-Ba-Sn(Sm,Ce)体系催化剂上的甲烷氧化偶联

朴红, 宿美平, 毕颖丽, 甄开吉   

  1. 吉林大学化学系, 长春, 130023
  • 收稿日期:1996-11-05 出版日期:1998-02-24 发布日期:1998-02-24
  • 通讯作者: 朴红,联系人:女,25岁,博士研究生.
  • 作者简介:朴红,女,25岁,博士研究生.
  • 基金资助:

    国家自然科学基金资助课题.

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

PIAO Hong, XU Mei-Ping, BI Ying-Li, ZHEN Kai-Ji   

  1. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1996-11-05 Online:1998-02-24 Published:1998-02-24

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.

关键词: 氧化镧, 氧化锡, 氧化钐, 氧化铈, 甲烷氧化偶联

Abstract: 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 C2 selectivities for OCM, Furthermore, low calcination temperature was favorable for the low temperature OCM reaction, and high C2 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.

Key words: La2O3, Sm2O3, SnO2, CeO2, Oxidative coupling of methane

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