DICP OpenIR
Subject Area物理化学
The effects of alkali metal on structure of manganese oxide supported on SBA-15 for application in the toluene catalytic oxidation
Qu, Zhenping1; Bu, Yibin1; Qin, Yuan1; Wang, Yi1; Fu, Qiang2; ZhenpingQu
KeywordToluene Mn/sba-15 k Ftir Adsorption Sites
Source PublicationCHEMICAL ENGINEERING JOURNAL
2012-10-15
DOI10.1016/j.cej.2012.07.138
Volume209Pages:163-169
Indexed BySCI
SubtypeArticle
Department5
Funding Project502
Contribution Rank2,5
WOS HeadingsScience & Technology ; Technology
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS Research AreaEngineering
WOS KeywordVOLATILE ORGANIC-COMPOUNDS ; MESOPOROUS SILICAS ; MCM-41 MATERIALS ; COMBUSTION ; ADDITIVES ; TEMPERATURE ; ADSORPTION ; REDUCTION ; ETHANOL ; VOCS
AbstractThe effects of alkali metal on the toluene catalytic oxidation were studied over the manganese oxide supported on SBA-15. Their properties were characterized by temperature programmed reduction (TPR), X-ray diffraction (XRD), diffuse reflectance spectra (DRS) and Fourier transform infrared (FTIR) techniques. It was found that the K/Mn molar ratios over the range of 0.1/1-0.3/1 greatly influenced the structure of the catalyst and the activity for toluene oxidation. When the K/Mn molar ratio was lower than 0.125/1, it led to a decrease in the dispersion of metal oxide particles and the reducibility, resulting in low reactivity for toluene oxidation. Increasing the K/Mn molar ratios to 0.15/1-0.18/1 resulted in the transformation of parts of MnO2 into Mn2O3, and accompanying with the high dispersion of metal oxides and better reducibility. The catalytic activity was obviously increased when the K/Mn molar ratio was 0.15/1-0.18/1. The reactivity of the sample with K/Mn above 0.18/1, however, declined sharply due to the blocking of active sites by K. Two important adsorption sites existed on the KMn/SBA-15 system, in which one was isolated OH groups on the SBA-15 and the other was the activated Si-O-Mn bond under the effect of K. (C) 2012 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000311190500021
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/118003
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhenpingQu
Affiliation1.Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China
2.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Qu, Zhenping,Bu, Yibin,Qin, Yuan,et al. The effects of alkali metal on structure of manganese oxide supported on SBA-15 for application in the toluene catalytic oxidation[J]. CHEMICAL ENGINEERING JOURNAL,2012,209:163-169.
APA Qu, Zhenping,Bu, Yibin,Qin, Yuan,Wang, Yi,Fu, Qiang,&ZhenpingQu.(2012).The effects of alkali metal on structure of manganese oxide supported on SBA-15 for application in the toluene catalytic oxidation.CHEMICAL ENGINEERING JOURNAL,209,163-169.
MLA Qu, Zhenping,et al."The effects of alkali metal on structure of manganese oxide supported on SBA-15 for application in the toluene catalytic oxidation".CHEMICAL ENGINEERING JOURNAL 209(2012):163-169.
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