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Fabrication and thermal stability of flower-like CeO2 with high surface area via anisotropic crystallization of carbonate precipitation

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2019, 29(4), pp.160~166
  • DOI : 10.6111/JKCGCT.2019.29.4.160
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : July 11, 2019
  • Accepted : August 12, 2019
  • Published : August 31, 2019

Hanbit Kim 1 Tae Ho Shin 1

1한국세라믹기술원

Accredited

ABSTRACT

Cerium oxide (CeO2 , often called as Ceria) is one of the valuable rare earth oxide materials, which has been widely used for high temperature applications such as solid oxide fuel cells, automotive three-way catalysts and oxygen storage capacity. Considering those application, it is important to improve high redox and thermal stability with high surface morphology because the high surface area of CeO2 could improve the catalytic reactivity at high temperature conditions. Herein we successfully fabricated hierarchical flower-like CeO2 deposited via controlling pathway of precipitation reaction to supply carbonate ion lead to the flower-like morphology. The hexagonal lattice system of precipitated precursor shows better thermal stability then orthorhombic one during thermal cycling condition.

Citation status

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