高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (1): 120.

• 论文 • 上一篇    下一篇

脉冲电晕等离子体下甲烷偶联反应研究(Ⅲ)──金属氧化物的多相催化作用

朱爱民1, 张秀玲2, 宫为民2, 张报安2   

  1. 1. 中国科学院大连化学物理研究所, 大连 116023;
    2. 大连理工大学碳资源综合利用开放实验室, 大连 116012
  • 收稿日期:1999-03-16 出版日期:2000-01-24 发布日期:2000-01-24
  • 通讯作者: 朱爱民(1970年出生),男,博士研究生,从事等离子体作用下的催化反应研究.E2mail:amzhu@ms.dicp.ac.cn E-mail:amzhu@ms.dicp.ac.cn
  • 基金资助:

    国家自然科学基金((批准号:29576229);大连理工大学三束与材料表面改性国家重点实验室和碳资源综合利用开放实验室联合资助

Studies on Coupling of Methane under Pulse Corona Plasma(Ⅲ)——Heterogeneous Catalysis of Metal Oxides

ZHU Ai-Min1, ZHANG Xiu-Ling2, GONG Wei-Min2, ZHANG Bao-An2   

  1. 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    2. Laboratory of Comprehensive Utilizationf or Carbonaceous Resources, Dalian Universityof Technology, Dalian 116012, China
  • Received:1999-03-16 Online:2000-01-24 Published:2000-01-24

摘要: 考察了常温常压脉冲电晕等离子体作用下金属氧化物对甲烷脱氢偶联反应的催化作用,观察到不同催化剂在脉冲电晕等离子体作用下的催化活性差别很大,且对C2产物的分布具有一定的调变作用.γ-MN2O3/γ-Al2O3催化剂的C2烃收率较空白载体提高了近2倍,C2烃选择性提高30%以上,该催化剂与脉冲电晕等离子体的结合可使其能量效率提高2倍以上.提出了一种等离子体催化作用促进甲烷脱氢偶联反应的初步模型.

关键词: 甲烷偶联, 脉冲电晕等离子体, 催化作用, 金属氧化物

Abstract: Under pulse corona plasma, heterogeneous catalysis of metal oxides upon the dehydrogenative coupling of methane was examined. In the presence of pulse corona plasma, the tested materials show various catalytic activities and adjust distribution of C2 products to a certain extent. Comparing the results with a blank γ-Al2O3 carrier, the C2 yield of a loaded γ-Mn2O3/γ-Al2O3 catalyst under plasma is nearly three times as large as the former and the C2 selectivity increases over 30 percent. Combined pulse corona plasma with it, the energy efficiency increases by a factor of 3 at least. Finally, a tentative model for the dehydrogenative coupling of methane under plasma over the catalyst is proposed.

Key words: Dehydrogenative coupling of methane, Pulse corona plasma, Catalysis, Metal oxides

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