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http://dx.doi.org/10.6111/JKCGCT.2017.27.6.309

Fabrication and characterization of ZrxCe1-xO2 catalytic powder by a hydrothermal process  

Choi, Yeon-Bin (Department of Advanced Materials Science and Engineering, Changwon National University)
Son, Jeong-hun (Department of Advanced Materials Science and Engineering, Changwon National University)
Sohn, Jeong Ho (School of Port and Logistics, Kaya University)
Bae, Dong-Sik (Department of Advanced Materials Science and Engineering, Changwon National University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.27, no.6, 2017 , pp. 309-312 More about this Journal
Abstract
The ceria powder is excellent in oxygen storage capacity (OSC) through the oxidation and reduction reaction of Ce ions and is used as a typical material for a three-way catalyst of an automobile which purifies the exhaust gas. However, since ceria generally has poor thermal stability at high temperatures, it is doped with metal ions to improve thermal stability. Therefore, in this study, Zr ions were doped into ceria powder, and their characteristics were further improved due to the increase of specific surface area with decreasing particle size due to doping. In this study, the synthesis of zirconium doped ceria nanopowder was synthesized by hydrothermal process. In order to synthesis Zr ion doped ceria nanopowder, the precursor reaction at was $200^{\circ}C$ for 6 hours. The average particle size of synthesized Zr doped $CeO_2$ nanopowder was below 20 nm. The specific surface area of synthesized Zr ion doped ceria nanopowder increased from $52.03m^2/g$ to $132.27m^2/g$ with Zr increased 30 %.
Keywords
Zr doped $CeO_2$; Hydrothermal process; Nanopowder; High surface area;
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