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Ca-Poisoning Effect on V2O5-WO3/TiO2 and V2O5-WO3-CeO2/TiO2 Catalysts with Different Vanadium Loading
Guo, Yangyang1; Xu, Xiaofei2; Gao, Hong2; Zheng, Yang1; Luo, Lei1; Zhu, Tingyu1,3
2021-04-01
Source PublicationCATALYSTS
Volume11Issue:4Pages:14
AbstractCa poisoning behavior is inevitable for high-calcium content flue gas, so V2O5-WO3/TiO2 (VWT) and V2O5-WO3-CeO2/TiO2 (VWCeT) catalysts with different vanadium content have been prepared and the Ca-doped catalysts are compared in this manuscript. The result shows Ce addition can both promote the NO conversion and the alkali resistance. Lower Ca addition for 0.1VWCeT catalyst promotes its oxidability and Ce modification is more suitable for low vanadium catalysts. The total acidity and the reducibility of catalysts decline after Ca doping, and the reducibility of the active species on catalysts has been strengthened by Ce addition. CeO2 based catalysts with lower Ca loading struggle to resist sulfur poisoning, while higher Ca loading favors SO2 adsorption and also physically reduces the cerium acidification process. In the presence of SO2, additional Bronsted acid sites are formed in Ca rich catalyst. The dynamic NH3 adsorption has been investigated, shows that Ca doping content on catalyst is critical for SCR reaction, and the catalyst is more susceptible to SO2 initially in alkali flue gas during the actual application, but the sulfur resistance may increase with the alkali-poisoning effect aggravated by Ca doping.
KeywordCa-poisoning SCR reaction NO reduction V2O5-WO3 TiO2 and V2O5-WO3-CeO2 TiO2 catalysts SO2 and water NO removal efficiency
DOI10.3390/catal11040445
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC021080401] ; National Science Foundation of China[51778600] ; Key Research and Development Program of Hebei Province[19273715D] ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment[NEL-KF-2019017]
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNational Key Research and Development Program of China ; National Science Foundation of China ; Key Research and Development Program of Hebei Province ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment
WOS IDWOS:000642875300001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48369
Collection中国科学院过程工程研究所
Corresponding AuthorGuo, Yangyang; Zhu, Tingyu
Affiliation1.Chinese Acad Sci, Innovat Acad Green Manufacture, Inst Proc Engn, Key Lab Green Proc & Engn,Natl Engn Lab Hydromet, Beijing 100190, Peoples R China
2.Inner Mongolia Univ Technol, Coll Energy & Power Engn, Hohhot 010051, Peoples R China
3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Guo, Yangyang,Xu, Xiaofei,Gao, Hong,et al. Ca-Poisoning Effect on V2O5-WO3/TiO2 and V2O5-WO3-CeO2/TiO2 Catalysts with Different Vanadium Loading[J]. CATALYSTS,2021,11(4):14.
APA Guo, Yangyang,Xu, Xiaofei,Gao, Hong,Zheng, Yang,Luo, Lei,&Zhu, Tingyu.(2021).Ca-Poisoning Effect on V2O5-WO3/TiO2 and V2O5-WO3-CeO2/TiO2 Catalysts with Different Vanadium Loading.CATALYSTS,11(4),14.
MLA Guo, Yangyang,et al."Ca-Poisoning Effect on V2O5-WO3/TiO2 and V2O5-WO3-CeO2/TiO2 Catalysts with Different Vanadium Loading".CATALYSTS 11.4(2021):14.
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