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Probing into the catalytic nature of Co/sulfated zirconia for selective reduction of NO with methane
Li, N; Wang, AQ; Zheng, MY; Wang, XD; Cheng, RH; Zhang, T
KeywordNo Reduction Methane Co Sulfated Zirconia
Source PublicationJOURNAL OF CATALYSIS
2004-07-25
DOI10.1016/j.jcat.2004.04.026
Volume225Issue:2Pages:307-315
Indexed BySCI
SubtypeArticle
Funding Project1501,1503
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordZEOLITE CATALYSTS ; NITRIC-OXIDE ; SULFATED ZIRCONIA ; NITROGEN-OXIDES ; EXCESS OXYGEN ; COBALT ; CH4 ; SITES ; O-2 ; HYDROCARBONS
AbstractIn this work, the structural and surface properties of Co-loaded sulfated zirconia (SZ) catalysts were studied by X-ray diffraction (XRD), N-2 adsorption, NH3-TPD, FT-IR spectroscopy, H-2-TPR, UV-vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), and NO-TPD. NH3-TPD and FT-IR spectra results of the catalysts showed that the sulfation process of the support resulted in the generation of strong Bronsted and Lewis acid sites, which is essential for the SCR of NO with methane. On the other hand, the N-2 adsorption, H-2-TPR, UV/vis DRS, and XPS of the catalysts demonstrated that the presence of the SO42- species promoted the dispersion of the Co species and prevented the formation Of Co3O4. Such an increased dispersion of Co species suppressed the combustion reaction of CH4 by O-2 and increased the selectivity toward NO reduction. The NO-TPD proved that the loading of Co increased the adsorption of NO over SZ catalysts, which is another reason for the promoting effect of Co. (C) 2004 Elsevier Inc. All rights reserved.
Language英语
URL查看原文
WOS IDWOS:000222477800006
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/81073
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
Li, N,Wang, AQ,Zheng, MY,et al. Probing into the catalytic nature of Co/sulfated zirconia for selective reduction of NO with methane[J]. JOURNAL OF CATALYSIS,2004,225(2):307-315.
APA Li, N,Wang, AQ,Zheng, MY,Wang, XD,Cheng, RH,&Zhang, T.(2004).Probing into the catalytic nature of Co/sulfated zirconia for selective reduction of NO with methane.JOURNAL OF CATALYSIS,225(2),307-315.
MLA Li, N,et al."Probing into the catalytic nature of Co/sulfated zirconia for selective reduction of NO with methane".JOURNAL OF CATALYSIS 225.2(2004):307-315.
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