简介概要

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.

详情信息展示

Preparation,Characterization of CuO/CeO2 and Cu/CeO2 Catalysts and Their Applications in Low-Temperature CO Oxidation

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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