催化学报

催化学报 ›› 2010, Vol. 31 ›› Issue (1): 78-83.

• 研究论文 • 上一篇    下一篇

乙烷添加对 Mo/HZSM-5 催化剂上甲烷芳构化反应的影响

孙长勇1,2, 姚颂东1, 申文杰1, 林励吾1   

  1. 1 中国科学院大连化学物理研究所催化基础国家重点实验室, 辽宁大连 116023 2 汕头大学化学系, 广东汕头 515063
  • 收稿日期:2010-01-25 出版日期:2010-01-25 发布日期:2010-01-25

Effect of Ethane Addition on Methane Dehydroaromatization over Mo/HZSM-5 Catalyst

SUN Changyong1,2, YAO Songdong1, SHEN Wenjie1,*, LIN Liwu1,*   

  1. 1State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China 2Department of Chemistry, Shantou University, Shantou 515063, Guangdong, China
  • Received:2010-01-25 Online:2010-01-25 Published:2010-01-25

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2217

被引次数

7

摘要： 研究了乙烷添加对 Mo/HZSM-5 催化剂上甲烷芳构化反应性能的影响. 在所考察的反应条件下, 未观察到乙烷添加对甲烷转化的促进作用, 乙烷本身反而生成甲烷, 同时导致更高的积炭生成速率, 使 Mo/HZSM-5 催化剂更快地失活. 但添加乙烷加速了钼活性中心的形成, 缩短了芳构化反应的诱导期, 使苯的生成提前.

关键词: 甲烷, 乙烷, 脱氢芳构化, 钼, HZSM-5 分子筛

Abstract: The effect of ethane addition on methane dehydroaromatization over a Mo/HZSM-5 catalyst was investigated. It was revealed that the ethane addition could not promote the conversion of methane but produced methane and increased coke deposition rate, causing rapid deactivation of the catalyst. However, ethane accelerated the formation of Mo active centers (Mo2C and/or MoOxCy species), shortening the induction period and moving the benzene formation forward.

Key words: methane, ethane, dehydroaromatization, molybdenum, HZSM-5 zeolite