CO2部分氧化乙烷制乙烯Pd-Cu/MoO3-SiO2催化剂的研究

摘要/Abstract

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

李青, 钟顺和, 邵宇. CO₂部分氧化乙烷制乙烯Pd-Cu/MoO₃-SiO₂催化剂的研究[J]. 应用化学, 1998, 0(6): 49-52.

Li Qing, Zhong Shunhe, Shao Yu. Study of Pd-Cu/MoO₃-SiO₂ Catalyst for Partial Oxidation of Ethane to Ethene by CO₂[J]. Chinese Journal of Applied Chemistry, 1998, 0(6): 49-52.

CO₂部分氧化乙烷制乙烯Pd-Cu/MoO₃-SiO₂催化剂的研究

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

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