CJCU

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (10): 2360.

• Preface • Previous Articles     Next Articles

Effects of Doping La, Mn on the Properties of CeO2-ZrO2-Al2O3

ZHANG Xue-Qiao1,2, XIN Xin2, LIU Jian-Ying2, LIU Sheng-Yu2, ZHAO Ming1*, CHEN Yao-Qiang1*   

  1. 1. College of Chemistry, Key Laboratory of Green Chemistry and Technology, Ministry of Education, Sichuan University, Chengdu 610064, China;
    2. College of Resource and Environment, Chengdu University of Technology, Chengdu 610025, China
  • Received:2011-01-17 Revised:2011-05-30 Online:2011-10-10 Published:2011-09-11
  • Contact: CHEN Yao-Qiang;ZHAO Ming E-mail:nic7501@scu.edu.cn;zhaoming@scu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20773090)和国家教育部博士学科点基金(批准号: 200806100009)资助.

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Abstract: A series of materials CeO2-ZrO2-A12O3(CZA) were prepared by the co-precipitation method and characterized by specific surface area measurements (BET), X-ray diffraction (XRD), H2-temperature-programmed reduction (H2-TPR), and X-ray photoelectron spectroscopy (XPS). The results showed that these successfully-prepared CZA solid solutions had an optimum textural performance after calcinations at 600℃ for 3h and the support sample of doping La and Mn together still possessed the high thermal stability. According to the H2-TPR, the modified sample by La and Mn showed a best property of reducibility in low temperature. XPS results indicated that by doping La, the transfer of Mn from the bulk to the surface in calcinations was restrained and the concentration of adsorbed oxygen was retained．

Key words: CeO2-ZrO2-A12O3, MnOx, Redox property

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