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On the catalytic nature of Mn/sulfated zirconia for selective reduction of NO with methane
Li, N; Wang, AQ; Liu, ZM; Wang, XD; Zheng, MY; Huang, YQ; Zhang, T; Zhang T(张涛); Zhang T(张涛)
KeywordNo Reduction Methane Mn Sulfated Zirconia
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
2006-02-22
DOI10.1016/j.apcatb.2005.08.007
Volume62Issue:3-4Pages:292-298
Indexed BySCI
SubtypeArticle
Department15
Funding Project1501
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordOXIDE SOLID-SOLUTIONS ; EXCESS O-2 ; SULFATED ZIRCONIA ; NITRIC-OXIDE ; FT-IR ; CO/SULFATED ZIRCONIA ; ALUMINA CATALYSTS ; ENHANCED ACTIVITY ; SURFACE-ACIDITY ; WATER-VAPOR
AbstractIn this work, the catalytic nature of Mn loaded sulfated zirconia (SZ) catalysts for the selective catalytic reduction (SCR) of NO with methane was investigated by a combination of reactions and characterizations such as FIF-IR spectroscopy, H-2-TPR, UV-vis diffuse reflectance spectroscopy (DRS) and NO-TPD. It was found from the results of reactions and FF-IR spectra that the strong Bronsted and Lewis acid sites in the Mn/SZ catalysts were essential for the SCR of NO with methane. The loading of Mn increased the number of strong Lewis acid sites on the surface of SZ catalyst, which is one reason for its promoting effect. On the other hand, FF-IR spectra, H-2-TPR and UV-vis DRS of the catalysts demonstrated that the presence of the SO42- species occupied the terminal OH sites on the surface of ZrO2 support and thereby restrained the formation of more oxidative and nonstoichiometrically dispersed MnOx (1.5 < x < 2) phase. Such an effect Of SO42- suppressed the combustion reaction of CH4 by O-2 and increased the selectivity towards NO reduction. The NO-TPD showed that the loading of Mn increased the adsorption of NO over SZ catalyst, which is another reason for the promoting effect of Mn. (c) 2005 Elsevier B.V. All rights reserved.
Language英语
URL查看原文
WOS IDWOS:000235265600013
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/97449
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhang T(张涛); Zhang T(张涛)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Li, N,Wang, AQ,Liu, ZM,et al. On the catalytic nature of Mn/sulfated zirconia for selective reduction of NO with methane[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2006,62(3-4):292-298.
APA Li, N.,Wang, AQ.,Liu, ZM.,Wang, XD.,Zheng, MY.,...&张涛.(2006).On the catalytic nature of Mn/sulfated zirconia for selective reduction of NO with methane.APPLIED CATALYSIS B-ENVIRONMENTAL,62(3-4),292-298.
MLA Li, N,et al."On the catalytic nature of Mn/sulfated zirconia for selective reduction of NO with methane".APPLIED CATALYSIS B-ENVIRONMENTAL 62.3-4(2006):292-298.
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