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上海大学学报(自然科学版) ›› 2010, Vol. 16 ›› Issue (3): 297-301.

• 环境与化学工程 • 上一篇    下一篇

CeO2对CuO/γ-Al2O3分散及烟气脱硫性能的影响

李卫清,王慧,刘国杰,周丽,孙俭   

  1. （上海大学 绿色化工与清洁能源研究所，上海 200444）
  • 出版日期:2010-06-28 发布日期:2010-06-28

Effect of CeO2Doping on Dispersion of CuO/γ-Al2O3 Sorbent Catalyst and Its Characteristics in Flue Gas Desulfurization

LI Wei-qing,WANG Hui,LIU Guo-jie,ZHOU Li,SUN Jian   

  1. (Center for Green Chemical and Environmental Energy Research, Shanghai University, Shanghai 200444, China)
  • Online:2010-06-28 Published:2010-06-28

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摘要：

 用分步浸渍法制备CuO/γ-Al2O3脱硫吸收催化剂.X射线衍射(X-ray diffraction,XRD)、H2程序升温还原(H2 temperature programmed reduction,H2TPR)和差热天平(thermogravimetric analysis,TGA)等技术分析表明，CuO在γ-Al2O3上的分散阈值为0.042 g/100 m2，CeO2以二维形态(2D-Ce)和团簇三维形态(3D-Ce)存在于γ-Al2O3表面.实验结果表明，CeO2有利于CuO分散，可明显提高CuO/γAl2O3吸收催化剂对SO2的吸收总量、吸收速率及其循环使用寿命.
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关键词:  CuO;CeO2;γ-Al2O3;烟气脱硫

Abstract:

CuO/γ-Al2O3 sorbent catalysts prepared by stepwise impregnation were studied using the X-ray diffraction (XRD), H2 temperatureprogrammed reduction (H2TPR) and thermogravimetric analysis (TGA) experiments. Results showed that the dispersion capacity of CuO loading on γ-Al2O3 was 0.042 g/100 m2. Two forms of CeO2 on γ-Al2O3 were observed: one consisted of highly dispersed entities (called 2D-Ce), and the other were relatively large three dimensional particles (3D-Ce). The controlled addition of CuO/γ-Al2O3 improved catalyst dispersion, substantially increased the absorption capacity and absorption rate and the cycling life of CuO/γ-Al2O3.

Key words:  CuO;CeO2;γ-Al2O3;flue gas desulfurization (FGD)

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