| 丁彦,杨廷录.甲烷氧化偶联催化剂La2O3／SrCO3—BaCO3的催化活性与表征[J].分子催化,1998,(6):467-470 |
| 甲烷氧化偶联催化剂La2O3／SrCO3—BaCO3的催化活性与表征 |
| The Catalytic Performance and Characterization of La 2O 3/SrCO 3 BaCO 3 Catalyst for Oxidative Coupling of Methane |
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| DOI： |
| 中文关键词: 甲烷 氧化偶联 催化剂 镧 |
| 英文关键词:Methane oxidative coupling, La 2O 3/SrCO 3 BaCO 3, Basicity, Pulse reaction, Oxygen species, |
| 基金项目: |
| 丁彦 杨廷录 |
| 中国科学院兰州化学物理研究所 |
| 摘要点击次数: 1385 |
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| 中文摘要: |
| 在甲烷氧化偶联制Ｃ２烃的研究中，人们发现碱土金属与稀土金属组成的复合氧化物催化剂具有高的催化活性［１，２］．稀土化合物作为有希望的工业催化剂之一，已受到广泛的关注．一般认为，它们含有的氧空位对活化甲烷的有效氧物种有利．Ｄｅｂｅｙ等在１％Ｓｒ／Ｌａ２Ｏ... |
| 英文摘要: |
| It is revealed that La 2O 3/SrCO 3 BaCO 3 is a good catalyst for oxidative coupling of methane with high methane conversion and high C 2 selectivity. The catalytic performance and surface properties of this catalyst were investigated using catalytic activity testing, pulse reaction technique, CO 2 TPD, XRD and ESR methods. SrCO 3 additive affects the structure, surface basicity, lattice oxygen mobility and catalytic surface oxgen species of La 2O 3/BaCO 3 catalyst, thus elevates both CH 4 conversion and C 2 selectivity. |
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