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题名: Mechanismic studies on the selective reduction of NO by CH4 over an In/HZSN-5 catalyst
作者: Wang, XD;  Ma, L;  Zhang, T;  Bao, XH;  Sun, XY;  Liang, DB;  Lin, LW
关键词: mechanism ;  selective reduction ;  nitrogen oxide ;  methane ;  indium/HZSM-5
刊名: CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
发表日期: 2000-07-01
卷: 21, 期:7, 页:1105-1107
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: CH4 oxidations in CH4 + O-2, NO + CH4 (+O-2) and NO2 + CH4 (+O-2) reaction systems over the catalyst of indium impregnated on HZSM-5 (In/HZSM-5) were studied. The efficacies of O-2, NO and NO2 for CH4 oxidation were evaluated. The dramatically different conversions of CH, in these different reaction systems suggested that NO2 played a key role in CH4 conversion. TPD studies of CH4, O-2, NO and NO2 on HZSM-5 and In/HZSM-5 were also investigated. It was found thar only NOx could absorb on the samples and the chemisorbed amount of NO2 was much larger than that of NO. This illustrated that the absorbed NO2 species were very important in the CH4-SCR process. Our TPD results and IR results from the literatures both indicated that not only the acid sites but also the In sites in the In/HZSM-5 catalyst facilitated the formation of NO2. Moreover, the reaction between NO2 and CH4 took place on the In sites.
关键词[WOS]: EXCESS OXYGEN ;  NITRIC-OXIDE ;  NITROGEN MONOXIDE ;  EXCHANGED ZSM-5 ;  METHANE ;  ZEOLITES
语种: 英语
WOS记录号: WOS:000088286300028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138660
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, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Environm Engn, Dalian 116023, Peoples R China

Recommended Citation:
Wang, XD,Ma, L,Zhang, T,et al. Mechanismic studies on the selective reduction of NO by CH4 over an In/HZSN-5 catalyst[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2000,21(7):1105-1107.
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