| Catalytic Oxidative Properties and Characterization of CuO／CeO2 Catalysts |
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| 引用本文： | 蒋晓原,周仁贤,袁骏,吕光烈,郑小明. Catalytic Oxidative Properties and Characterization of CuO／CeO2 Catalysts[J]. 中国稀土学报(英文版), 2003, 21(1): 55-59 |
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| 作者姓名： | 蒋晓原 周仁贤 袁骏 吕光烈 郑小明 |
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| 作者单位： | Institute of Catalysis，Institute of Catalysis，State Key Laboratory of Silicon M aterial Science，Analysis and Test Center Zhejiang University，Institute of Catalysis Hangzhou 310028，China |
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| 基金项目： | ProjectsupportedbyZhejiangProvinceEducationBoard ( 9812 2 99) |
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| 摘 要： | ＣｅＯ2 ｏｒｍａｔｅｒｉａｌｓｃｏｎｔａｉｎｉｎｇＣｅＯ2 ｐｏｓｓｅｓｓｕｎｉｑｕｅｒｅｄｏｘｐｒｏｐｅｒｔｉｅｓｉｎｃａｔａｌｙｔｉｃｐｒｏｃｅｓｓｅｓ[1～ 3] ,ａｎｄｃａｎｉｍｐｒｏｖｅｄｉｓｐｅｒｓｉｏｎｏｆａｃｔｉｖｅｃｏｍｐｏｎｅｎｔｓｏｎｔｈｅｓｕｐ ｐｏｒｔｓａｎｄｔｈｕｓｅｎｈａｎｃｅｔｈｅｉｒｔｈｅｒｍａｌｓｔａｂｉｌｉｔｙａｎｄｃａｔａｌｙｔｉｃａｃｔｉｖｉｔｙ .ＭｏｓｔｓｔｕｄｉｅｓｈａｖｅｕｓｅｄＣｅＯ2 ａｓａｎａｄｄｉｔｉｖｅ[4 ] ａｎｄｅｘａｍｉｎｅｄｉｔｓｉｎｔｅｒａ…
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| 关 键 词： | 物理化学 氧化铜 氧化铈 接触反应 接触氧化特性 稀土 |
Catalytic Oxidative Properties and Characterization of CuO/CeO2 Catalysts |
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| Jiang Xiaoyuan ,Zhou Renxian,Yuan Jun ,Lu Guanglie ,Zheng Xiaoming. Catalytic Oxidative Properties and Characterization of CuO/CeO2 Catalysts[J]. Journal of Rare Earths, 2003, 21(1): 55-59 |
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| Authors: | Jiang Xiaoyuan Zhou Renxian Yuan Jun Lu Guanglie Zheng Xiaoming |
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| Affiliation: | Jiang Xiaoyuan 1*,Zhou Renxian1,Yuan Jun 2,Lu Guanglie 3,Zheng Xiaoming 1 |
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| Abstract: | The oxidative properties and characterization of CuO, CeO2 and CuO/CeO2 catalysts were examined by means of a CO micro-reactor GC system, TPR, XPS and X-ray diffraction Rietveld methods. The results show that either CuO or CeO2 activity is quite low for CO oxidation. However, when CuO and CeO2 are mixed, the oxidative activity of the catalyst increases significantly, probably owing to the valency status of copper species (Cu2+ and Cu+) on the CeO2 surface, the dispersion and reducibility. XPS surface analysis shows that CuO loading is very important in forming of either Cu2+ or Cu+. Rietveld analysis shows that some CuO, which has smaller ion radius than Ce4+, enters the CeO2 lattice after CuO and CeO2 are mixed. When the CuO loading reaches 5.0%, the size of CuO crystals is a minimum (6.1 nm) and the micro-strain value is a maximum (2.86×10-3), resulting in high surface energy and the best activity for CO oxidation. |
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| Keywords: | physical chemistry CuO/CeO 2 catalysts CO micro-reactor GC system rare earths |
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