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学科主题: 物理化学
题名: The improved reactivity of manganese catalysts by Ag in catalytic oxidation of toluene
作者: Qu, Zhenping1;  Bu, Yibin1;  Qin, Yuan1;  Wang, Yi1;  Fu, Qiang2
通讯作者: Zhenping Qu
关键词: Toluene oxidation ;  Ag-Mn/SBA-15 ;  Redox properties ;  Lattice oxygen ;  Interaction
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2013-03-27
DOI: 10.1016/j.apcatb.2012.12.008
卷: 132, 页:353-362
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 5
项目归属: 502
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Environmental ;  Engineering, Chemical
资助者: 2,5
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The effects of Ag on Mn/SBA-15 catalysts have been investigated in the toluene catalytic oxidation. The reactivity of catalysts is related closely to the Ag/Mn molar ratio, and the sample with 1:3 of Ag/Mn molar ratio exhibits the highest reactivity for toluene oxidation, with a complete conversion at 260 degrees C. Based on the characterization results, it is found that Ag enters into MnO2 phase, and the Ag1.8Mn8O16 mixed phase forms. Meanwhile Ag leads to parts of MnO2 being transformed into Mn2O3. The Ag/Mn molar ratio has a strong influence on the molar ratio of the surface Mn4+ to Mn3+ and surface adsorbed oxygen (O-ads) to lattice oxygen (O-latt) through the interaction between silver and MnOx. The coexistence of MnO2, Mn2O3, Ag1.8Mn8O16, and the strong interactions between Ag and Mn species exhibit a good synergetic interaction, which promotes the reducibility of catalysts and the formation of abundant active lattice oxygen, thus increasing the catalytic activity of toluene oxidation. And the formation of intermediate benzaldehyde should be closely link with the lattice oxygen of the Mn based catalyst. (c) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: VOLATILE ORGANIC-COMPOUNDS ;  OXIDE CATALYSTS ;  LATTICE OXYGEN ;  PHOTOCATALYTIC OXIDATION ;  LOW-TEMPERATURES ;  CH4 OXIDATION ;  CO OXIDATION ;  GAS-PHASE ;  COMBUSTION ;  SILVER
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000315369700038
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119512
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.Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Qu, Zhenping,Bu, Yibin,Qin, Yuan,et al. The improved reactivity of manganese catalysts by Ag in catalytic oxidation of toluene[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2013,132:353-362.
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