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题名: Selective decomposition of nitrogen monoxide to nitrogen in the presence of oxygen on RuO2 Ag(cathode) yttria-stabilized zirconia Pd(anode)
作者: Iwayama, K;  Wang, XP
关键词: nitric oxide ;  NO decomposition ;  electrochemical cell ;  ruthenium oxide ;  zirconia
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 1998-11-09
卷: 19, 期:2, 页:137-142
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: Selective decomposition of nitrogen monoxide (NO) in the presence of oxygen was studied on electrochemical cells composed of yttria-stabilized zirconia (YSZ), electrodes, and surface oxide layers added. Decomposition activity was first measured on metal oxide/Pd(cathode)/YSZ/Pd(anode) at 773-973 K and 3.0 V of applied voltage in a flow of 50 ml/min containing 1000 ppm of NO and 6% of O-2 in helium. Coating of various metal oxides onto the cathode electrode greatly changed the decomposition activity; the order was RuO2>>Pt>Rh2O3>Ni>none>Ag>WO3. The activity of the system modified by RuO2 has been investigated as a function of the kind of electrode, the applied voltage, and the reaction temperature. The cell of RuO2/Ag(cathode)/YSZ/Pd(anode) was found to show the most excellent activity among the cells examined. The conversion of NO and the current efficiency for NO decomposition reached 31.8% and 11.8%, respectively, at 7 mA/cm(2) of current density induced by 2.2 V and 773 K, and the NO decomposition proceeded selectively about 13 times than the O-2 decomposition under the reaction condition. (C) 1998 Elsevier Science B.V. All rights reserved.
关键词[WOS]: TEMPERATURE ;  NO
语种: 英语
WOS记录号: WOS:000077686800007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138164
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.Toray Ind Inc, Chem Res Labs, Minato Ku, Nagoya, Aichi, Japan
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Iwayama, K,Wang, XP. Selective decomposition of nitrogen monoxide to nitrogen in the presence of oxygen on RuO2 Ag(cathode) yttria-stabilized zirconia Pd(anode)[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,1998,19(2):137-142.
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