| 钙钛矿型氧化物催化剂SrTiO3的甲烷氧化偶联反应性能的研究 |
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| 引用本文： | 缪建文,范以宁,金永漱,陈 懿. 钙钛矿型氧化物催化剂SrTiO3的甲烷氧化偶联反应性能的研究[J]. 无机化学学报, 2004, 20(8): 967-970 |
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| 作者姓名： | 缪建文 范以宁 金永漱 陈 懿 |
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| 作者单位： | 1. 南京大学化学系,南京,210093;南通师范学院化学系,南通,226007
2. 南京大学化学系,南京,210093 |
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| 基金项目： | 国家重点基础研究发展规划项目(No.G1999022400)，南京大学分析测试基金资助课题。 |
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| 摘 要： | 碱土元素氧化物是一类具有较好催化活性和选择性的甲烷氧化偶联(OCM)催化剂[1,2]。Filkova[3]等研究了不同的碱土金属氧化物促进的Nd2O3催化剂的OCM催化性能,发现在所有碱土金属氧化物-Nd2O3催化剂中,SrO-Nd2O3催化剂具有最高的生成C2烃的选择性,这可能因为SrO较强的碱性以及Sr
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| 关 键 词： | 甲烷氧化偶联 钙钛矿 XPS 吸附氧 |
| 修稿时间： | 2004-02-05 |
A Study on Catalytic Properties of Perovskite-type Oxide SrTiO3Catalysts for Oxidative Coupling of Methane |
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| MIAO Jian-Wen,FAN Yi-Ning,JIN Yong-Shu and CHEN Yi. A Study on Catalytic Properties of Perovskite-type Oxide SrTiO3Catalysts for Oxidative Coupling of Methane[J]. Chinese Journal of Inorganic Chemistry, 2004, 20(8): 967-970 |
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| Authors: | MIAO Jian-Wen FAN Yi-Ning JIN Yong-Shu CHEN Yi |
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| Affiliation: | Department of Chemistry, Nanjing University, Nanjing 210093;Department of Chemistry, Nantong Normal College, Nantong 226007,Department of Chemistry, Nanjing University, Nanjing 210093,Department of Chemistry, Nanjing University, Nanjing 210093 and Department of Chemistry, Nanjing University, Nanjing 210093 |
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| Abstract: | The structure and catalytic properties of SrTiO3 perovskite-type oxide catalysts for oxidative coupling of methane (OCM) have been studied by using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and microreactor tests. It has been shown that OCM catalytic properties of SrTiO3 catalysts are correlated to the Sr/Ti atomic ratio. Increasing Sr/Ti ratio in the perovskite-type SrTiO3 catalysts results in the surface enrichment of Sr element, leading to the the higher content of adsorbed oxygen species on the surface of catalysts and thus higher C2 selectivity for OCM reaction. |
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| Keywords: | OCM perovskite-type XPS adsorbed oxygen |
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