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题名: An investigation of the surface intermediates of H-2-SCR of NOx over Pt/H-FER
作者: Yang, Shufang1;  Wang, Xinping1;  Chu, Wenling2;  Song, Zhuonan1;  Zhao, Shuai1
关键词: Reaction intermediate ;  NO2 ;  H-2-SCR ;  H-ferrierite
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2011-09-21
DOI: 10.1016/j.apcatb.2011.08.001
卷: 107, 期:3-4, 页:380-385
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Environmental ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Catalytic performance of platinum supported on H-ferrierite (H-FER) in selective catalytic reduction of NO and NO2 by hydrogen (H-2-SCR) was investigated. 87.9% of the NOx was reduced with 56% of selectivity to N-2 when a gas mixture of 910 ppm NO, 90 ppm NO2, 5000 ppm H-2, 10% 02 in N-2 passed through a 0.5 wt.%Pt/H-FER catalyst at 110 degrees C and gas hourly space velocity (GHSV) of 36,000 h(-1). It was found that the NOx reduction sharply decreased at higher reaction temperature, accompanied by large amount of NO2 formation. The NOx conversion was also drastically decreased by increasing the concentration of NO2 while holding the total concentration of NO + NO2 in the feed gas mixture. Based on in situ Fourier transform infrared spectroscopy investigation, it was proposed that NO2 and nitrate species were not essential intermediates of H-2-SCR over the catalyst, while NO delta+ species on Pt was a possible species for efficient elimination of NO. (C) 2011 Elsevier B.V. All rights reserved.
关键词[WOS]: SELECTIVE CATALYTIC-REDUCTION ;  PT/MGO-CEO2 CATALYST ;  REACTION-MECHANISM ;  NITROGEN MONOXIDE ;  OXYGEN ;  TEMPERATURE ;  ZEOLITE ;  H-2 ;  PROPANE ;  ALUMINA
语种: 英语
WOS记录号: WOS:000295305500019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142680
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
2.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Yang, Shufang,Wang, Xinping,Chu, Wenling,et al. An investigation of the surface intermediates of H-2-SCR of NOx over Pt/H-FER[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2011,107(3-4):380-385.
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