CJCU

Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (12): 2484.

• Letters • Previous Articles     Next Articles

Investigation of the Properties of CeO2-ZrO2-Al2O3 Prepared by Co-precipitation

LI Hong-Mei, ZHOU Ju-Fa, ZHU Qing-Chao, ZENG Shao-Hua, WEI Zhen-Ling, CHEN Yao-Qiang, GONG Mao-Chu*   

  1. Key Laboratory of Green Chemistry﹠Technology, Ministry of Education, Sichuan University, Chengdu 610064, China
  • Received:2009-07-15 Online:2009-12-10 Published:2009-12-10
  • Contact: GONG Mao-Chu. E-mail: nic7501@email.scu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20773090), 国家“八六三”计划项目(批准号: 2006AA06Z347)和博士点基金(批准号: 20070610026)资助.

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Abstract:

CeO2-based oxygen materials were prepared with co-precipitation method and characterized via Brunauer-Emmet Teller(BET) method, X-ray diffraction(XRD) and temperature-programmed reduction(H2-TPR). This paper revealed that three CeO2-based oxygen storage materials are all forming homogeneous solid solution. Among the samples, CeO2-ZrO2-Al2O3(CZA) has the best textural properties and excellent thermal stability. The specific surface area and pore volume of aged CZA are 90 m2/g and 0.29 mL/g. We proposed a viewpoint: Al3+ might insert among the interspace of fluorite structure or highly dispersal in solid solutions.

Key words: CeO2-ZrO2-Al2O3; Co-precipitation method; Thermal stability; Structure property; Solid solution

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