| SrTi0.9M0.1O3-δ钙钛矿型氧化物催化剂甲烷氧化偶联反应性能的研究 |
| A Study of the Catalytic Properties of SrTi0.9M0.1O3-δ Perovskite-type Catalysts for Oxidative Coupling of Methane |
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| 摘要: |
| 关键词: 甲烷氧化偶联 钙钛矿 氧空位 吸附氧 |
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| Abstract: The structure and catalytic properties of SrTi0.9M0.1O3-δ (M=Mg，Al， Zr) perovskite-type catalysts for ox-idative coupling of methane (OCM) have been studied by using X-ray diffraction (XRD)，X-ray photoelectron spectroscopy (XPS) and temperature-programmed desorption of oxygen(O2-TPD) methods. It has been shown that doping the cations of lower valence (e.g. Mg2+， Al3+) to the B site of SrTi0.9M0.1O3-δ perovskite-type catalysts results in the higher content of adsorbed oxygen species on the surface of catalysts and thus higher C2-selectivity for OCM reaction. It is suggested that the oxygen vacancies of SrTi0.9M0.1O3-δ (M=Mg， Al， Zr) perovskite-type catalysts are the sites responsible for oxygen activation， and the adsorbed oxygen species on the surface of SrTi0.9M0.1O3-δ catalysts are the main active species for OCM reaction. |
| Keywords: OCM perovskite-type oxygen vacancy absorbed oxygen |
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| 缪建文,范以宁,金永漱,陈 懿.SrTi0.9M0.1O3-δ钙钛矿型氧化物催化剂甲烷氧化偶联反应性能的研究[J].无机化学学报,2003,19(11):1257-1260. |
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