| Sr_2Fe_(1-x)Mg_xMoO_6复合氧化物的甲烷催化燃烧性能研究 |
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| 引用本文： | 汪正红,冯绍杰,杨萍华. Sr_2Fe_(1-x)Mg_xMoO_6复合氧化物的甲烷催化燃烧性能研究[J]. 中国科学技术大学学报, 2010, 40(4). DOI: 10.3969/j.issn.0253-2778.2010.04.005 |
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| 作者姓名： | 汪正红 冯绍杰 杨萍华 |
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| 作者单位： | 1. 中国科学院能量转换材料重点实验室,中国科学技术大学材料科学与工程系,安徽合肥,230026
2. 安徽建筑工业学院材料与化学工程学院,安徽合肥,230022 |
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| 基金项目： | 国家自然科学基金，可控化学与材料化工安徽省重点实验室资助 |
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| 摘 要： | 采用溶胶凝胶法制备了双钙钛矿结构Sr2Fe1-xMgxMoO6系列氧化物,通过XRD、BET、XPS、TG等手段对催化材料进行了物性表征;以甲烷纯氧燃烧为目标反应,研究了Mg离子对Fe离子进行掺杂替代对催化材料性能的影响.结果表明:Sr2Fe1-xMgxMoO6主要有两个阶段的失重过程,分别与吸附态氧和晶格氧的失去有关;Mg2+掺杂导致B位有序度的提高,对催化活性不利.
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| 关 键 词： | 甲烷 催化燃烧 双钙钛矿 氧空位 |
Catalytic combustion of methane over double perovskite Sr2Fe1-xMgxMoO6 mixed oxides |
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| WANG Zhenghong,FENG Shaojie,YANG Pinghua. Catalytic combustion of methane over double perovskite Sr2Fe1-xMgxMoO6 mixed oxides[J]. Journal of University of Science and Technology of China, 2010, 40(4). DOI: 10.3969/j.issn.0253-2778.2010.04.005 |
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| Authors: | WANG Zhenghong FENG Shaojie YANG Pinghua |
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| Affiliation: | WANG Zhenghong1,FENG Shaojie2,YANG Pinghua1(1.CAS Key Laboratory of Materials for Energy Conversion,, Department of Materials Science , Engineering,University of Science , Technology of China,Hefei 230026,China,2.School of Materials & Chemical Engineering,Anhui University of Architecture,Hefei 230022,China) |
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| Abstract: | A series of double perovskite mixed oxide catalysts nominal Sr2Fe1-xMgxMoO6 was prepared with the sol-gel method and the properties of as-synthesized powders were characterized by XRD,BET,XPS,and TG.The catalytic activity of the Sr2Fe1-xMgxMoO6 for catalytic combustion of methane was tested in a pure oxygen atmosphere without dilute gas.The TG curves exhibit a typical two weight-loss processes similar to that of perovskite oxides.The results reveal that the catalytic activity of Sr2Fe1-xMgxMoO6 is affected ... |
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| Keywords: | methane catalytic combustion double perovskite oxygen vacancy |
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