中华医学超声杂志

应用化学 ›› 1998, Vol. 0 ›› Issue (6): 49-52.

• 研究论文 • 上一篇    下一篇

CO2部分氧化乙烷制乙烯Pd-Cu/MoO3-SiO2催化剂的研究

李青, 钟顺和, 邵宇   

  1. 天津大学化工学院 天津300072
  • 收稿日期:1998-04-06 修回日期:1998-09-21 出版日期:1998-12-10 发布日期:1998-12-10

Study of Pd-Cu/MoO3-SiO2 Catalyst for Partial Oxidation of Ethane to Ethene by CO2

Li Qing, Zhong Shunhe, Shao Yu   

  1. College of Chemical Engineering, Tianjin University, Tianjin 300072
  • Received:1998-04-06 Revised:1998-09-21 Published:1998-12-10 Online:1998-12-10

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摘要： 用化学吸附-红外光谱、化学吸附-程序升温脱附(TPD)和微型反应技术研究了Pd-Cu/MoO3-SiO2(MoSO)催化剂对CO2和乙烷的吸附活化和部分氧化反应性能。结果表明,乙烷以C-H键中的H吸附于MoSO载体表面MoO键的端基氧上；Pd-Cu/MoSO催化剂对CO2有良好的化学吸附活化性能,CO2的吸附除有线式吸附态 和剪式吸附态 外,还有一种新的卧式吸附态 ；Pd-Cu/MoSO催化剂的晶格氧参与了化学反应。探讨了在Pd-Cu/MoSO催化剂上CO2的部分氧化乙烷反应机理.

关键词: CO2活化, 乙烷氧化, 复合氧化物载体, 双金属Pd-Cu催化剂

Abstract: Chemisorption combined with IR spectrometry and TPD and microreactor techniques have been used to investigate the adsorption activation and partial oxidation reactivity of CO2 and C2H6 on title catalyst. It is found that C2H6 is chemisorbed on the surface of the catalyst through H of its CH bond and terminal O of Mo=O bond. For the adsorption of CO2 on the catalyst besides the linear type and the scissors type there appears another horizo ntal type . The lattice oxygen of the catalyst is found to play an important role in partial oxidation. A mechanism of partial oxidation is proposed.

Key words: CO2 activation, ethane oxidation, complex oxide support, bimetallic Pd-Cu catalyst

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