Enhanced NOx conversion by coupling NOx storage-reduction with CO adsorption-oxidation over the combined Pd-K/MgAlO and Pd/MgAlO catalysts
Chen, H; Zhang, YX; Xin, Y; Li, Q; Zhang, ZL; Jiang, Z; Ma, YP; Zhou, H; Zhang, J; Zhang, YX (reprint author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Inst New Energy Technol, 1219 Zhongguan West Rd, Ningbo 315201, Zhejiang, Peoples R China.
2015
发表期刊CATALYSIS TODAY
ISSN0920-5861
卷号258期号:pt2页码:416—423
文章类型期刊文献
摘要NOx conversion was enhanced by coupling NOx storage-reduction (NSR) with CO adsorption-oxidation (CAO), which was observed in NSR lean-rich cycle tests with CO as a reductant on catalysts of Mg-Al mixed oxides supported Pd (Pd/MgAlO) and Pd-K (Pd-K/MgAlO). CO was adsorbed on Pd sites in the rich condition and then oxidized by gaseous NO via Eley-Rideal mechanism during the transition from the rich condition to the lean condition, which results in an enhanced NO conversion. This is confirmed by different configuration experiments of Pd-K/MgAlO and Pd/MgAlO, acting as NSR and CAO catalysts, respectively. The intimate mixture of Pd-K/MgAlO and Pd/MgAlO showed much higher activity due to the resultant coupling effect of NSR with CAO in comparison with a zone-arranged catalyst system no matter whether Pd-K/MgAlO or Pd/MgAlO was in the front. The coupling also worked in the presence of H2O and CO2 despite that the efficiency were spoiled. This strategy is ease to be implemented and thereby is potential for the practical after-treatment technology for lean-burn and diesel engines. (C) 2014 Elsevier B.V. All rights reserved.
关键词Lean-burn Engine Thermal-stability Trap Catalysts Mixed Oxides Temperature Capacity Performance Pt/al2o3 Behavior Support
收录类别SCI
语种英语
WOS记录号WOS:000364438700023
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/24920
专题中科院上海应用物理研究所2011-2018年
通讯作者Zhang, YX (reprint author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Inst New Energy Technol, 1219 Zhongguan West Rd, Ningbo 315201, Zhejiang, Peoples R China.
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GB/T 7714
Chen, H,Zhang, YX,Xin, Y,et al. Enhanced NOx conversion by coupling NOx storage-reduction with CO adsorption-oxidation over the combined Pd-K/MgAlO and Pd/MgAlO catalysts[J]. CATALYSIS TODAY,2015,258(pt2):416—423.
APA Chen, H.,Zhang, YX.,Xin, Y.,Li, Q.,Zhang, ZL.,...&Zhang, YX .(2015).Enhanced NOx conversion by coupling NOx storage-reduction with CO adsorption-oxidation over the combined Pd-K/MgAlO and Pd/MgAlO catalysts.CATALYSIS TODAY,258(pt2),416—423.
MLA Chen, H,et al."Enhanced NOx conversion by coupling NOx storage-reduction with CO adsorption-oxidation over the combined Pd-K/MgAlO and Pd/MgAlO catalysts".CATALYSIS TODAY 258.pt2(2015):416—423.
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