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题名: On the catalytic nature of Mn/sulfated zirconia for selective reduction of NO with methane
作者: Li, N;  Wang, AQ;  Liu, ZM;  Wang, XD;  Zheng, MY;  Huang, YQ;  Zhang, T
通讯作者: 张涛
关键词: NO reduction ;  methane ;  Mn ;  sulfated zirconia
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2006-02-22
DOI: 10.1016/j.apcatb.2005.08.007
卷: 62, 期:3-4, 页:292-298
收录类别: SCI
文章类型: Article
部门归属: 15
项目归属: 1501
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Environmental ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: In 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.
关键词[WOS]: OXIDE SOLID-SOLUTIONS ;  EXCESS O-2 ;  SULFATED ZIRCONIA ;  NITRIC-OXIDE ;  FT-IR ;  CO/SULFATED ZIRCONIA ;  ALUMINA CATALYSTS ;  ENHANCED ACTIVITY ;  SURFACE-ACIDITY ;  WATER-VAPOR
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000235265600013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/97449
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,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.
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