Preparation,Characterization of CuO/CeO2 and Cu/CeO2 Catalysts and Their Applications in Low-Temperature CO Oxidation
来源期刊：JOURNAL OF RARE EARTHS2005年第1期
论文作者：ZHANG Shoumin Wu Shihua WANG Shuping HUANG Weiping Han Dongzhan Zheng Xiucheng Wang Shurong
Key words：catalytic chemistry; CuO/CeO2 catalysts; Cu/CeO2 catalysts; carbon monoxide oxidation; rare earths;
Abstract: CeO2 was synthesized via sol-gel process and used as supporter to prepare CuO/CeO2, Cu/CeO2 catalysts by impregnation method. The catalytic properties and characterization of CeO2, CuO/CeO2 and Cu/CeO2 catalysts were examined by means of a microreactor-GC system, HRTEM, XRD, TPR and XPS techniques. The results show that CuO has not catalytic activity and the activity of CeO2 is quite low for CO oxidation. However, the catalytic activity of CuO/CeO2 and Cu/CeO2 catalysts increases significantly. Furthermore, the activity of CuO/CeO2 is higher than that of Cu/CeO2 catalysts.
ZHANG Shoumin1，Wu Shihua1，WANG Shuping1，HUANG Weiping1，Han Dongzhan1，Zheng Xiucheng1，Wang Shurong1
(1.Department of Chemistry, Nankai University, Tianjin 300071, China)
Abstract:CeO2 was synthesized via sol-gel process and used as supporter to prepare CuO/CeO2, Cu/CeO2 catalysts by impregnation method. The catalytic properties and characterization of CeO2, CuO/CeO2 and Cu/CeO2 catalysts were examined by means of a microreactor-GC system, HRTEM, XRD, TPR and XPS techniques. The results show that CuO has not catalytic activity and the activity of CeO2 is quite low for CO oxidation. However, the catalytic activity of CuO/CeO2 and Cu/CeO2 catalysts increases significantly. Furthermore, the activity of CuO/CeO2 is higher than that of Cu/CeO2 catalysts.
Key words:catalytic chemistry; CuO/CeO2 catalysts; Cu/CeO2 catalysts; carbon monoxide oxidation; rare earths;
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