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题名: Probing into the catalytic nature of Co/sulfated zirconia for selective reduction of NO with methane
作者: 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
发表日期: 2004-07-25
DOI: 10.1016/j.jcat.2004.04.026
卷: 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
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.
关键词[WOS]: ZEOLITE CATALYSTS ;  NITRIC-OXIDE ;  SULFATED ZIRCONIA ;  NITROGEN-OXIDES ;  EXCESS OXYGEN ;  COBALT ;  CH4 ;  SITES ;  O-2 ;  HYDROCARBONS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000222477800006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81073
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
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.
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