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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
关键词No Reduction Methane Co Sulfated Zirconia
刊名JOURNAL OF CATALYSIS
2004-07-25
DOI10.1016/j.jcat.2004.04.026
225期:2页:307-315
收录类别SCI
文章类型Article
项目归属1501,1503
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]ZEOLITE CATALYSTS ; NITRIC-OXIDE ; SULFATED ZIRCONIA ; NITROGEN-OXIDES ; EXCESS OXYGEN ; COBALT ; CH4 ; SITES ; O-2 ; HYDROCARBONS
英文摘要In 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.
语种英语
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WOS记录号WOS:000222477800006
引用统计
被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/81073
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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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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