高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (3): 459.

• 研究快报 • 上一篇    下一篇

微波辐照下(Bi2O3)0.8(La2O3)0.2固熔体对甲

陈长林, 洪品杰, 戴树珊, 阚家德   

  1. 云南大学化学系, 昆明 650091
  • 收稿日期:1994-11-28 修回日期:1995-01-08 出版日期:1995-03-24 发布日期:1995-03-24
  • 通讯作者: 戴树珊
  • 作者简介:陈长林,男,32岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Catalytic Behaviour of Oxidative Coupling of Methane over Solid Solution (Bi2O3)0.8(La2O3)0. 2Irradiated by Microwave

CHEN Chang-Lin, HONG Pin-Jie, DAI Shu-Shan, KAN Jia-De   

  1. Department of Chemistry, Yunnan University, Kunming 650091
  • Received:1994-11-28 Revised:1995-01-08 Online:1995-03-24 Published:1995-03-24

PDF (PC)

关键词: 微波, 甲烷氧化偶联, (Bi2O3)0.8(La2O3)0.2

Abstract: The catalytic behaviour of oxidative coupling of methane over solid solution (Bi2O3)0.8(La2O3)0.2under microwave irradiation was investigated. Compared with the classical method, the application of microwave irradiation appears to have beneficial effects: (1)When methane conversion reaches the sarne level, under microwave irradiation, the temperature of catalytic bed is much lower than conventional heating mode. We propose that this is due to "microwave hot spot effect" which generated by localized coupling of microwave energy to point defects or weak-bond surface, and the "microwave hot spots" are just the activecenters for the production of methyl radicals. (2) Under microwave irradiation, CO2can be suppressed to some extent at lower methane conversion level, while CO can be suppressed to some extent at higher methane conversion level. (3) Under microwave irradiation, the ratio of C2H2/C2H6was lower, while C2-selectivity was higher.

Key words: Microwave, Oxidative coupling of methane, (Bi2O3)0.8(La2O3)0.2

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