CeO2-WO3 Mixed Oxides for the Selective Catalytic Reduction of NOx by NH3 Over a Wide Temperature Range
CeO2-WO3 Mixed Oxides for the Selective Catalytic Reduction of NOx by NH3 Over a Wide Temperature Range
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DOI：
10.1007/s10562-011-0701-4
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发表时间：
2011-12-01
影响因子：
2.8
通讯作者：
Arandiyan, Hamidreza
中科院分区：
文献类型：
--
作者：
Chen, Liang;Li, Junhua;Arandiyan, Hamidreza
A series of cerium-tungsten oxide catalysts was prepared by the co-precipitation method and was evaluated for the selective catalytic reduction of NOx by ammonia (NH3-SCR) over a wide temperature range. These catalysts were characterized by BET, XRD, XPS and H-2-TPR analyses. The experimental studies demonstrated that, among cerium-tungsten oxides, CeO2-WO3 with a Ce/W molar ratio of 3/2 exhibited the best activity toward NH3SCR reactions, N-2 selectivity and SO2 durability over a broad temperature range of 175-500 degrees C at a space velocity of 47,000 h(-1). The strong interaction between Ce and W could be the main factor leading to the high activity of the CeO2-WO3 mixed oxide catalyst.
