Anionic surfactant‐aided preparation of high surface area and high thermal stability ceria/zirconia‐mixed oxide from cerium and zirconium glycolates via sol–gel process and its reduction property |
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Authors: | M. Rumruangwong S. Wongkasemjit |
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Affiliation: | The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand |
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Abstract: | This work is focused on the ceria zirconia mixed oxide prepared through a surfactant‐introduced synthesis method. High surface area nanoparticle mesoporous ceria/zirconia‐mixed oxide was successfully synthesized and characterized using various techniques. High surface area mesoporous fluorite‐structured CeO2? ZrO2 was obtained from the elimination of surfactants upon calcination. A surface area in excess of 205.6 m2/g was obtained after calcination at 500 °C, and dropped to 75.96 m2/g by heating at 900 °C. Temperature‐programming reduction (TPR) results showed that the lowest reduction temperature was obtained from the sample containing 40% zirconia content. Copyright © 2008 John Wiley & Sons, Ltd. |
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Keywords: | ceria zirconia sol– gel process TPR anionic surfactant |
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