| La2O3对Pd密偶催化剂性能的影响 |
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| 引用本文： | 姚艳玲,方瑞梅,史忠华,龚茂初,陈耀强.La2O3对Pd密偶催化剂性能的影响[J].催化学报,2011,32(4):589-594. |
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| 作者姓名： | 姚艳玲 方瑞梅 史忠华 龚茂初 陈耀强 |
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| 作者单位： | 四川大学化学学院绿色化学与技术教育部重点实验室; |
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| 基金项目： | supported by the National Natural Science Foundation of China(20773090,20803049); the Specialized Research Fund for the Doctoral Program of Higher Education(20070610026)~~ |
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| 摘 要： | 采用浸渍法制备了不同La2O3含量的Pd密偶催化剂.使用低温N2吸附-脱附、X射线衍射、H2程序升温还原、CO化学吸附和X射线光电子能谱等技术考察了La2O3对催化剂性能的影响.模拟汽车尾气条件考察了催化剂上丙烷的转化活性.活性测试结果表明,La2O3的添加能显著提高催化剂对丙烷的转化活性和催化剂的热稳定性.H2-TP...
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| 关 键 词： | 氧化镧 钯 丙烷 密偶催化剂 热稳定性 |
The Effect of La_2O_3 on Pd Close-Coupled Catalysts |
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| YAO Yanling,FANG Ruimei,SHI Zhonghua,GONG Maochu,CHEN Yaoqiang.The Effect of La_2O_3 on Pd Close-Coupled Catalysts[J].Chinese Journal of Catalysis,2011,32(4):589-594. |
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| Authors: | YAO Yanling FANG Ruimei SHI Zhonghua GONG Maochu CHEN Yaoqiang |
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| Institution: | YAO Yanling,FANG Ruimei,SHI Zhonghua,GONG Maochu,CHEN Yaoqiang Key Laboratory of Green Chemistry and Technology,Ministry of Education,College of Chemistry,Sichuan University,Chengdu 610064,Sichuan,China |
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| Abstract: | Palladium close-coupled catalysts were prepared by impregnation method with different amounts of La2O3 as a promoter.Low temperature N2 adsorption-desorption,X-ray diffraction,H2-temperature programmed reduction (H2-TPR),CO-chemisorption,and X-ray photoelectron spectroscopy (XPS) were used to characterize the effect of La2O3 on the physicochemical properties of the prepared catalysts.Their catalytic activities toward C3H8 conversion were evaluated using a gas mixture that simulates the emissions from a gaso... |
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| Keywords: | lanthanum oxide palladium propane close-coupled catalyst thermal stability |
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