| CuO对贵金属/CeO2/Al2O3催化剂的作用 |
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| 引用本文： | 李英实,陈宏德,田群,沈迪新. CuO对贵金属/CeO2/Al2O3催化剂的作用[J]. 环境科学, 1999, 20(6): 71-73 |
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| 作者姓名： | 李英实 陈宏德 田群 沈迪新 |
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| 作者单位： | 中国科学院生态环境研究中心, 北京 100085;中国科学院生态环境研究中心, 北京 100085;中国科学院生态环境研究中心, 北京 100085;中国科学院生态环境研究中心, 北京 100085 |
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| 基金项目： | 国家“九五”科技攻关项目(The National Key Sci. and Tech. Project during the Ninth Five-year Plan Period) |
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| 摘 要： | 制备含少量贵金属Ｐｔ、Ｐｄ的不同Ｃｕ和Ｃｅ摩尔含量比（０：１０，１：９，２：８）的催化剂，实验条件十加入ＣｕＯ可以提高Ｐｔ催化剂的二效活性；加入Ｃｕ：Ｃｅ＝２：８的ＣｕＯ降低了Ｐｄ催化剂的顾效性能，然而Ｃｕ：Ｃｅ＝１：９时可以改善Ｐｄ催化剂的三效催化性能。通过结构分析，认为ＣｕＯ的存在可以提高ｄ催化剂的比表面积，ＰｄＯ的分散度。
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| 关 键 词： | 贵金属 催化剂 汽车尾气净化 |
| 收稿时间： | 1999-04-25 |
Effect of CuO on Precious Metal Promoted by CeO2 Monolith Catalysts |
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| Li Yingshi,Chen Hongde,Tian Qun and Shen Dixin. Effect of CuO on Precious Metal Promoted by CeO2 Monolith Catalysts[J]. Chinese Journal of Environmental Science, 1999, 20(6): 71-73 |
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| Authors: | Li Yingshi Chen Hongde Tian Qun Shen Dixin |
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| Affiliation: | Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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| Abstract: | Catalysts which consist of Cu and Ce in different molar ratios and a small amount of precious metal were prepared.It was showed that CuO can promote oxidation activity of Pt/Cu-Ce/Al2O3 catalyst. The Pd/Cu-Ce/Al2O3 catalyst with Cu:Ce=1:9 has better three way catalyst activity and thermal resistance than those with other Cu:Ce molar ratios By BET,X-Ray Diffraction,X-Ray Photoelectron Spectra experiments,it was proved that a little additive of CuO increases specific surface areas of the catalysts and improves Pd dispersion of the Pd/Cu-Ce/Al2O3 catalyast. |
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| Keywords: | CuO precious metal catalysts |
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