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NOx Removal over V2O5/WO3-TiO2 Prepared by a Grinding Method: Influence of the Precursor on Vanadium Dispersion
Gan, Lina1,2; Chen, Jianjun2; Peng, Yue2; Yu, Jian1; Tran, Tuyetsuong1; Li, Kezhi2; Wang, Dong2; Xu, Guangwen1; Li, Junhua2
2018-01-10
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume57Issue:1Pages:150-157
AbstractV2O5/WO3 TiO2 (VWT) catalysts for selective catalytic reduction (SCR) of NOx removal were prepared by a mechanical grinding method using different vanadium precursors. The SCR performances were evaluated in simulated flue gas and explained through characterizations by X-ray diffraction, X-ray photoelectron spectroscopy, Raman sp ectroscopy, Hy temperature -programmed reduction, and in situ diffuse reflectance Fourier transform spectroscopy. VO(acac)(2)-VWT catalyst prepared using a vanadyl acetylacetonate (VO(acac)(2)) precursor exhibited the highest catalytic activity and excellent resistance to SO2 and H2O poisoning in 200-400 degrees C compared to the catalysts obtained using other precursors. The VO(acac)(2) precursor could enrich V on the surface remarkably and promote the formation and dispersion of polymeric vanadia species. Furthermore, a relatively high percentage of low-valent vanadium atoms were found on the VO(acac), VVVT surface, facilitating electron transfer between V4+ and V5+. Surfaceadsorbed.NH3 species on VO(acac)(2) VWT were much more reactive. The initial geometry of vanadium precursors determined the tendency of V to accumulate and further influenced the dispersion and final form of V species.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acs.iecr.7b04060
Indexed BySCI
Language英语
WOS KeywordSELECTIVE CATALYTIC-REDUCTION ; OXIDATIVE DEHYDROGENATION ; V2O5/TIO2 CATALYST ; RAMAN-SPECTROSCOPY ; OXIDE CATALYSTS ; LOW-TEMPERATURE ; SCR CATALYST ; LASER RAMAN ; NH3 ; MECHANISM
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationPublic Projects Foundation of China Ministry of Environmental Protection(201509021 ; National High-Tech Research and the Development (863) Program of China(2015AA034603) ; 201509012)
WOS IDWOS:000419999800015
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24075
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Gan, Lina,Chen, Jianjun,Peng, Yue,et al. NOx Removal over V2O5/WO3-TiO2 Prepared by a Grinding Method: Influence of the Precursor on Vanadium Dispersion[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2018,57(1):150-157.
APA Gan, Lina.,Chen, Jianjun.,Peng, Yue.,Yu, Jian.,Tran, Tuyetsuong.,...&Li, Junhua.(2018).NOx Removal over V2O5/WO3-TiO2 Prepared by a Grinding Method: Influence of the Precursor on Vanadium Dispersion.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,57(1),150-157.
MLA Gan, Lina,et al."NOx Removal over V2O5/WO3-TiO2 Prepared by a Grinding Method: Influence of the Precursor on Vanadium Dispersion".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 57.1(2018):150-157.
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