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| NO对LaMnO3与La0.8K0.2MnO3催化氧化碳烟活性影响 | |
| 引用本文： | 王志成,付名利,吴军良,黄碧纯,梁红,叶代启. NO对LaMnO3与La0.8K0.2MnO3催化氧化碳烟活性影响[J]. 中国稀土学报, 2012, 30(3): 289-294 |
| 作者姓名： | 王志成 付名利 吴军良 黄碧纯 梁红 叶代启 |
| 作者单位： | 1. 华南理工大学环境科学与工程学院,广东广州510006;华南理工大学“工业聚集区污染控制与生态修复”教育部重点实验室,广东广州510006 2. 华南理工大学“工业聚集区污染控制与生态修复”教育部重点实验室,广东广州,510006 3. 广州大学化学化工学院,广东广州,510006 |
| 基金项目： | 广东省自然科学基金项目，广东高校科技成果转化项目 |
| 摘 要： | 采用柠檬酸络合法制备LaMnO3和La0.8K0.2MnO3钙钛矿催化剂,运用程序升温氧化(TPO)考察在不同反应气氛下催化燃烧碳烟的活性,并通过XRD,O2-TPD,NO-TPD,XPS以及NO预处理后O2-TPD等技术对催化剂进行表征和分析。结果表明,NO的存在促进了碳烟的催化氧化,但是对LaMnO3和La0.8K0.2MnO3氧化碳烟的促进效果不同。这与催化剂表面氧空位和活性氧物种有密切联系。 |
| 关 键 词： | 一氧化氮 钙钛矿催化剂 活性氧物种 碳烟燃烧 稀土 |
Effect of NO on Soot Oxidation Over LaMnO3 and La0.8K0.2MnO3 |
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| Wang Zhicheng , Fu Mingli , Wu Junliang , Huang Bichun , Liang Hong , Ye Daiqi. Effect of NO on Soot Oxidation Over LaMnO3 and La0.8K0.2MnO3[J]. Journal of the Chinese Society of Rare Earths, 2012, 30(3): 289-294 | |
| Authors: | Wang Zhicheng Fu Mingli Wu Junliang Huang Bichun Liang Hong Ye Daiqi |
| Affiliation: | 1,2(1.College of Environmental Science and Engineering,South China University of Technology,Guangzhou 510006,China;2.The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters,Ministry of Education of China,South China University of Technology,Guangzhou 510006,China;3.College of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510006,China) |
| Abstract: | Perovskite catalysts La0.8MnO3 and La0.8K0.2MnO3 were prepared by citric acid complex method.The catalytic properties of the two catalysts for soot combustion were evaluated through temperature programmed oxidation(TPO) in different gas atmosphere.The catalysts were characterized and analyzed by XRD,O2-TPD,NO-TPD,XPS and NO pretreated O2-TPD technique.The results showed that the presence of NO had a positive effect on the catalytic oxidation of soot,but it had different degrees of catalytic effect as to LaMnO3 and La0.8K0.2MnO3 during the procedure of the catalytic oxidation of soot.This phenomenon was closely associated with the surface oxygen vacancies and the active oxygen species on the catalysts. |
| Keywords: | nitrogen monoxide perovskite catalyst active oxygen species soot combustion rare earths |
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