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Catalytic oxidation of CO over Pt/TiO2 with low Pt loading: The effect of H2O and SO2
Feng, Chenglin1,2; Liu, Xiaolong1; Zhu, Tingyu1,3; Hu, Yutao1; Tian, Mengkui2
2021-07-25
Source PublicationAPPLIED CATALYSIS A-GENERAL
ISSN0926-860X
Volume622Pages:8
AbstractAnatase TiO2 loaded with 0.1wt.% Pt catalyst (0.1Pt/TiO2-A) was prepared via the impregnation method, and its CO catalytic oxidation activity was investigated. Noteworthy, introduction of H2O into the reaction atmosphere apparently facilitated the catalytic oxidation of CO. Besides, introduction of SO2 inhibited the catalytic oxidation of CO. In presence of H2O and SO2, 0.1Pt/TiO2-A showed outstanding catalytic stability, and X-ray photoelectron spectroscopy (XPS) and thermogravimetric (TG) characterizations suggested that the amount of sulfate species deposited on the 0.1Pt/TiO2-A treated at 230 degrees C did not increase with time extension, which might be an important reason for the high sulfur resistance of 0.1Pt/TiO2-A. XPS results also demonstrated that the dissociation of H2O led to considerably increase of hydroxyl groups over the catalyst surface. (H2O)-O-18 isotope-labeling experiments unambiguously showed that C16O18O was the main product accounting for 88.9%, revealing that the other oxygen atom in the product CO2 was mostly from H2O. Consequently, based on previous researches and our experimental results, the mechanism of H2O promoting CO oxidation on 0.1Pt/TiO2-A catalyst was proposed.
KeywordCO Catalytic oxidation Water promotion Reaction mechanism
DOI10.1016/j.apcata.2021.118218
Language英语
WOS KeywordPREFERENTIAL OXIDATION ; SUPPORT ; MECHANISM ; STATE ; WATER ; ACTIVATION ; PLATINUM ; SINGLE ; ATOM
Funding ProjectNational Key Research & Development (R&D) Program of China[2018YFC0213400] ; National Key Research & Development (R&D) Program of China[2017YFC0210500] ; National Natural Science Foundation of China[51938014]
WOS Research AreaChemistry ; Environmental Sciences & Ecology
WOS SubjectChemistry, Physical ; Environmental Sciences
Funding OrganizationNational Key Research & Development (R&D) Program of China ; National Natural Science Foundation of China
WOS IDWOS:000661298100005
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/49219
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Xiaolong; Zhu, Tingyu
Affiliation1.Chinese Acad Sci, Innovat Acad Green Manufacture, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Guizhou Univ, Sch Chem & Chem Engn, Guiyang 550025, Guizhou, 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
Feng, Chenglin,Liu, Xiaolong,Zhu, Tingyu,et al. Catalytic oxidation of CO over Pt/TiO2 with low Pt loading: The effect of H2O and SO2[J]. APPLIED CATALYSIS A-GENERAL,2021,622:8.
APA Feng, Chenglin,Liu, Xiaolong,Zhu, Tingyu,Hu, Yutao,&Tian, Mengkui.(2021).Catalytic oxidation of CO over Pt/TiO2 with low Pt loading: The effect of H2O and SO2.APPLIED CATALYSIS A-GENERAL,622,8.
MLA Feng, Chenglin,et al."Catalytic oxidation of CO over Pt/TiO2 with low Pt loading: The effect of H2O and SO2".APPLIED CATALYSIS A-GENERAL 622(2021):8.
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