Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (08): 2249-2254.doi: 10.3866/PKU.WHXB20100641

• CATALYSIS AND SURFACE STRUCTURE • Previous Articles     Next Articles

Complete Oxidation of Ethanol and Thermal Stability of Ceria-BasedMaterials Modified by Doping Cu

WANG Jian-Qiang1,3, SHEN Mei-Qing1,2, WANG Jun1, WANG Wu-Lin3, JIA Li-Wei4   

  1. 1. Key Laboratory for Green Chemical Technology of Education Ministry, School of Chemical Engineering &Technology, Tianjin University, Tianjin 300072, P. R. China;
    2. State Key Laboratory of Engines, Tianjin University, Tianjin 300072, P. R. China;
    3. China Automotive Technology & Research Center, Tianjin 300162, P. R. China;
    4. Weifu Environmental Catalysts Co., Ltd., Wuxi 214028, Jiangsu Province, P. R. China
  • Received:2009-12-30 Revised:2010-03-05 Published:2010-07-23
  • Contact: SHEN Mei-Qing E-mail:mqshen@tju.edu.cn
  • Supported by:

    The project was supported by the National High-Tech Research and Development Program of China (863) (2009AA064803).

Abstract:

The complete oxidation of ethanol (COE) was studied over Cu0.1Ce0.9Ox and Cu0.1Ce0.6Zr0.3Ox catalysts prepared by the sol-gel method. Samples were characterized by X-ray powder diffraction (XRD), Brunauer-Emmett-Teller (BET) adsorption, Raman spectroscopy, hydrogen temperature-programmed reduction (H2-TPR), X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance (EPR). Results show that for fresh samples, the activity of COE is found to be superior over Cu0.1Ce0.9Ox than over Cu0.1Ce0.6Zr0.3Ox whereas this is reversed for aged samples. The thermal stability improves after the introduction of Zr. Furthermore, the relationship between the active species and the activity for COE was investigated.

Key words: Cu0.1Ce0.9Ox, Cu0.1Ce0.6Zr0.3Ox, Complete oxidation of ethanol, Thermal stability

MSC2000: 

  • O643