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Preparation of ordered mesoporous nanocrystalline ceria and ceria-zirconia for soot oxidation

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Abstract

Ordered mesoporous ceria and ceria-zirconia with high specific surface area were prepared by nanocasting of a mesoporous silica KIT-6 template and used for soot oxidation. The as-synthesized ordered mesoporous ceria and ceria-zirconia were characterized by XRD, TEM,Nitrogen adsorption-desorption,Raman spectroscopy, and XRF. The results indicate that mesoporous ceria and ceria-zirconia possess highly ordered mesoporous structure, and exhibited excellent catalytic performance in soot oxidation. T 50 of mesoporous ceria and ceria-zirconia are 475 and 470 °C, respectively.The high catalytic activity of mesoporous materials can be attributed to the mesoporous structure and small crystallite size. Moreover, aged mesoporous materials exhibit high catalytic activity.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China

    Peng Yang  (杨鹏)

  2. School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, China

    Shiyu Zhou & Jiaheng Lei  (雷家珩)

Authors
  1. Peng Yang  (杨鹏)
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  2. Shiyu Zhou
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  3. Jiaheng Lei  (雷家珩)
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Corresponding author

Correspondence to Jiaheng Lei  (雷家珩).

Additional information

Supported by the National Natural Science Foundation of China (No.21476177)

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Yang, P., Zhou, S. & Lei, J. Preparation of ordered mesoporous nanocrystalline ceria and ceria-zirconia for soot oxidation. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 113–117 (2016). https://doi.org/10.1007/s11595-016-1339-2

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  • DOI: https://doi.org/10.1007/s11595-016-1339-2

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