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题名: DRIFTS study of NO-H-2 reaction over Pd/Al2O3 with excess oxygen
作者: Yang, JB;  Fu, OZ;  Wu, DY;  Wang, SD
关键词: DRIFTS ;  NO ;  H-2 ;  Pd/Al2O3
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2004-04-20
DOI: 10.1016/j.apcatb.2003.11.017
卷: 49, 期:1, 页:61-65
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: Pd (0.1 wt.%)/Al2O3 catalyst was found to be active for the selective NO reduction employing H-2 (NO conversion > 90%) under excess O-2 at low temperatures (110-190degreesC) with good N-2 selectivity (about 70%). The selectivity towards N2O was sensitive to the reaction conditions and decreased as the temperature was raised. The maximum selectivity to NH3 occurred at 190 degreesC. The selectivity to N2O was inhibited greatly by O-2 at low temperatures. Gaseous O-2 promoted the selectivity to N-2 as well as the generation of adsorbed NH species in comparison to the reactions without O-2. In situ diffuse reflectance IR spectroscopy (DRIFTS) measurements suggested that there was competition between H-2 and other adsorbed species such as nitrates and water at low temperatures, and the rate determining step may be the adsorption and activation of H-2 over the catalyst. (C) 2004 Elsevier B.V. All rights reserved.
关键词[WOS]: SELECTIVE CATALYTIC-REDUCTION ;  PD CATALYSTS ;  NO ;  SPECTROSCOPY ;  KINETICS ;  PROPENE ;  AMMONIA
语种: 英语
WOS记录号: WOS:000220939600006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138434
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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Yang, JB,Fu, OZ,Wu, DY,et al. DRIFTS study of NO-H-2 reaction over Pd/Al2O3 with excess oxygen[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2004,49(1):61-65.
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