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Effect of Water on Active Iron Sites for N2O Decomposition over Fe/ZSM-5 Catalyst
Xia, Haian; Sun, Keqiang; Feng, Zhaochi; Li, Can
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2011-01-20
DOI10.1021/jp1094917
Volume115Issue:2Pages:542-548
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordNITROUS-OXIDE DECOMPOSITION ; HIGH-TEMPERATURE TREATMENT ; CHEMICAL-VAPOR-DEPOSITION ; EX-FRAMEWORK FEZSM-5 ; SELECTIVE OXIDATION ; MFI ZEOLITES ; COMPREHENSIVE DFT ; KINETIC-ANALYSIS ; NOX REDUCTION ; FE-SILICALITE
AbstractThe effect of H2O on N2O decomposition in Fe/ZSM-5 catalyst was investigated by steady-state kinetics, transient response methods, in situ Raman, and IR spectroscopies. Fe/ZSM-5 catalysts show very high activity in N2O decomposition but are deactivated rapidly when trace amounts of water are present. In situ Raman spectra results indicate that the peroxide bridge on the binuclear Fe sites are converted to the hydroxylated binuclear Fe sites when exposed to water. It was found that the Raman band at 743 cm(-1) and the IR bands at 3628 and 3672 cm(-1) are associated with the deactivation of the catalyst during N2O decomposition. The catalyst was regenerated after calcination at a temperature over 773 K. The inhibiting effect of H2O on N2O decomposition indicates that the presence of water leads to the structural transformation from the dehydroxylated binuclear Fe sites to the hydroxylated binuclear Fe sites on Fe/ZSM-5.
Language英语
WOS IDWOS:000286090100030
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142354
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Xia, Haian,Sun, Keqiang,Feng, Zhaochi,et al. Effect of Water on Active Iron Sites for N2O Decomposition over Fe/ZSM-5 Catalyst[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2011,115(2):542-548.
APA Xia, Haian,Sun, Keqiang,Feng, Zhaochi,&Li, Can.(2011).Effect of Water on Active Iron Sites for N2O Decomposition over Fe/ZSM-5 Catalyst.JOURNAL OF PHYSICAL CHEMISTRY C,115(2),542-548.
MLA Xia, Haian,et al."Effect of Water on Active Iron Sites for N2O Decomposition over Fe/ZSM-5 Catalyst".JOURNAL OF PHYSICAL CHEMISTRY C 115.2(2011):542-548.
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