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Mechanismic studies on the selective reduction of NO by CH4 over an In/HZSN-5 catalyst
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
2000-07-01
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
关键词[WOS]EXCESS OXYGEN ; NITRIC-OXIDE ; NITROGEN MONOXIDE ; EXCHANGED ZSM-5 ; METHANE ; ZEOLITES
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.
语种英语
WOS记录号WOS:000088286300028
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138660
专题中国科学院大连化学物理研究所
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
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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.
APA Wang, XD.,Ma, L.,Zhang, T.,Bao, XH.,Sun, XY.,...&Lin, LW.(2000).Mechanismic studies on the selective reduction of NO by CH4 over an In/HZSN-5 catalyst.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,21(7),1105-1107.
MLA Wang, XD,et al."Mechanismic studies on the selective reduction of NO by CH4 over an In/HZSN-5 catalyst".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 21.7(2000):1105-1107.
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