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Template-Free Synthesis of Sphere, Rod and Prism Morphologies of CeO2 Oxidation Catalysts

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Abstract

Ceria materials with sphere, rod, and prism morphologies were synthesized via the hydrolysis of solutions containing Ce(NO3)3 and urea under hydrothermal conditions. By carefully adjusting the synthesis conditions (salt concentration, temperature and synthesis time), spheres with a diameter of about 200 nm, rods of about 6 nm in width and 60 nm in length and prisms with an edge length of about 600 nm were synthesized. XRD and TEM indicate that the grain size of these samples is in the range of 7–10 nm after calcination at 450 °C. These ceria materials exhibit a higher catalytic activity in the oxidation of CO than conventionally prepared CeO2.

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Authors and Affiliations

  1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, 116023, China

    Yejun Guan, Haidong Zhang, Zhaochi Feng & Can Li

  2. Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands

    Emiel J. M. Hensen

  3. Institute of Chemical and Engineering Sciences (ICES), 1 Pesek Road, Jurong Island, Singapore, 627833, Singapore

    Yan Liu

Authors
  1. Yejun Guan
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  2. Emiel J. M. Hensen
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  3. Yan Liu
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  4. Haidong Zhang
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  5. Zhaochi Feng
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  6. Can Li
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Correspondence to Yejun Guan or Can Li.

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Guan, Y., Hensen, E.J.M., Liu, Y. et al. Template-Free Synthesis of Sphere, Rod and Prism Morphologies of CeO2 Oxidation Catalysts. Catal Lett 137, 28–34 (2010). https://doi.org/10.1007/s10562-010-0349-5

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  • DOI: https://doi.org/10.1007/s10562-010-0349-5

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