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Structure and performance of a V2O5-WO3/TiO2-SiO2 catalyst derived from blast furnace slag (BFS) for DeNO(x)
Tuyet-Suong Tran1,2; Yu, Jian1; Li, Changming1; Guo, Feng1; Zhang, Yusheng1; Xu, Guangwen1
2017
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume7Issue:29Pages:18108-18119
Abstract

The titanium-bearing blast furnace slag (BFS), a solid waste with high TiO2 content (around 20%) and huge production (3.6 million tons per year), has caused serious environmental problems in China. The reuse of BFS in making DeNO(x) catalysts has been confirmed to be promising because of its low cost and high effectiveness for DeNO(x). In this work, four V2O5-WO3/TiO2-SiO2 samples from BFS and commercial Ti/Si were made with different amounts of Al2O3/Fe2O3/SO42- dopants to reveal the unique structure effect of a slag-based catalyst on the catalytic behavior for DeNO(x). Catalyst characterization clarified that the Al2O3/Fe2O3/SO42- dopants from BFS may facilitate the formation of Ti-O-Si linkages with abundant structure defects. The structure possibly played a key role in acquiring a high surface area, well-dispersed active VOx species, sufficient weak acid sites and a high amount of O-ads and V4+ species for the slag-based catalyst. These advantages in structure were confirmed by catalytic tests showing superior DeNO(x) performances. Nonetheless, too many SO42- dopants caused agglomeration of TiO2-SiO2 particles, formation of strong acid sites and a high amount of O-ads species to negatively impact the DeNO(x) activity, selectivity and catalyst lifetime.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c7ra01252g
Indexed BySCI
Language英语
WOS KeywordLow-temperature ; Physicochemical Properties ; V2o5/tio2 Catalysts ; Nh3-scr Activity ; Titania-silica ; Reduction ; Nh3 ; No ; Tio2 ; Scr
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationScience and Technology Service Network Initiative of China(KFJ-SW-STS-149) ; International Science and Technology Cooperation Program of China(2016YFE0128300) ; Japan Society for the Promotion of Science (JSPS)(P15758)
WOS IDWOS:000399005200068
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22456
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Tuyet-Suong Tran,Yu, Jian,Li, Changming,et al. Structure and performance of a V2O5-WO3/TiO2-SiO2 catalyst derived from blast furnace slag (BFS) for DeNO(x)[J]. RSC ADVANCES,2017,7(29):18108-18119.
APA Tuyet-Suong Tran,Yu, Jian,Li, Changming,Guo, Feng,Zhang, Yusheng,&Xu, Guangwen.(2017).Structure and performance of a V2O5-WO3/TiO2-SiO2 catalyst derived from blast furnace slag (BFS) for DeNO(x).RSC ADVANCES,7(29),18108-18119.
MLA Tuyet-Suong Tran,et al."Structure and performance of a V2O5-WO3/TiO2-SiO2 catalyst derived from blast furnace slag (BFS) for DeNO(x)".RSC ADVANCES 7.29(2017):18108-18119.
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