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Citation: XIAO Yi-Hong, ZHENG Yong, CAI Guo-Hui, ZHENG Ying, WEI Ke-Mei. Synthesis of Nano-SiC and Its Application as Support for CO Oxidation Reaction[J]. Chinese Journal of Applied Chemistry, ;2008, 25(11): 1311-1314. shu

Synthesis of Nano-SiC and Its Application as Support for CO Oxidation Reaction

1.
a National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002;
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b College of Chemistry and Materials Science, Fujian Normal University, Fuzhou

Corresponding author: XIAO Yi-Hong,
Received Date: 21 January 2008
Available Online: 24 April 2008
Fund Project: 国家自然科学基金(20576021) (20576021)福建省自然科学基金计划(E0710004)资助项目 (E0710004)

A sol-gel process catalyzed by nickel nitrate was used for the preparation of SiC precursor from raw materials of tetraethyl orthosilicate(TEOS) and sucrose.Nano-silicon carbide(nano-SiC) was synthesized from SiC precursor by carbothermal reduction under dynamic vacuum condition at 1 000℃.The surface area of the obtained nano-SiC was 104 m²/g and the particle size was in the range from 40 to 60 nm.Pt/SiC for CO oxidation was then prepared by incipient wetness impregnation of nano-SiC.The result shows that the catalyst exhibits relatively high activity.The addition of Fe results in the improvement of catalytic performance for the oxidation of CO.Compared to Pt/SiC,the lowest temperature for the complete conversion of CO on Pt-Fe/SiC-2(195℃) is lowered by 45℃.
- nano-SiC,
- vacuum,
- support,
- carbon monoxide oxidation,
- platinum,
- iron promoter
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