Title: Activities of different metal oxide catalysts on NO reduction and CO oxidation

Authors: Jyh-Cherng Chen, Guor-Cheng Fang, Shiao-Shiang Shi

Addresses: Department of Environmental Engineering, Hung-Kuang University, No. 34, Chung-Chie Rd., Shalu, Taichung County, Taiwan 43302, ROC. ' Department of Environmental Engineering, Hung-Kuang University, No. 34, Chung-Chie Rd., Shalu, Taichung County, Taiwan 43302, ROC. ' Department of Environmental Engineering, Hung-Kuang University, No. 34, Chung-Chie Rd., Shalu, Taichung County, Taiwan 43302, ROC

Abstract: A series of transition metal oxide catalysts (Zn, Ti, Cu, Ni, Fe and V) supported on Al₂O₃ and SiO2 were prepared using the incipient wetness impregnation method. Their performances on NO reduction and CO oxidation followed the sequence of TiO₂ > CuO/ZnO > CuO > ZnO. TiO₂ supported on SiO₂ was more active than that on Al₂O₃, while ZnO had the opposite performances. The activities of CuO/Al₂O₃ and ZnO/SiO₂ were both decreased with the calcination temperature increasing because the sintering and agglomerations of catalysts were occurred at high temperature.

Keywords: catalysis; metal oxide catalysts; nitric oxide reduction; carbon monoxide oxidation; aluminium oxide; silicon dioxide; calcination temperatures.

DOI: 10.1504/IJEP.2009.024473

International Journal of Environment and Pollution, 2009 Vol.37 No.1, pp.86 - 96

Published online: 06 Apr 2009 *

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