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Characterization of CuO-BaO/SiO2 catalysts structure
Alternative TitleCuO-BaO/SiO2 催化剂的结构表征
Yang, R; Hu TD(胡天斗); Hu, TD; Liu, T; Xiang, HW; Zhong, B; Xu, Y; Wu, D; Liu T(刘涛)
Corresponding AuthorChinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
AbstractThe structure of CuO-BaO/SiO2 catalysts and their reduced states has been characterized by means of XRD, SPS and EXAFS. Both the results of XRD and XPS indicate that copper and barium in CuO-BaO/SiO2 exist in CuO and BaO respectively and the SiO2 support has influence on the structure of CuO. The EXAFS results show that. the coordination number and length of Cu-O shell and Cu-Cu shell gradually decrease with the supported content decreasing and the extent of decrease is the largest for low supported content samples. When the: supported content exceeds 13.39%, CuO in samples is in crystalline state, when the supported content is smaller or equals 13.39%, CuO in samples is in monolayer dispersion state. In the reduced catalyst samples, only metal copper is detected. With the content of CuO in CuO-BaO/SiO2 decreasing, the length and coordination number of Cu-Cu bond of metal copper on reduced catalyst surface also decrease gradually.
KeywordCuO BaO XRD XPS EXAFS ultrafine SiO2
Subject AreaChemistry
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000075192400004
Citation statistics
Document Type期刊论文
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Yang, R,Hu TD,Hu, TD,et al. Characterization of CuO-BaO/SiO2 catalysts structure[J]. ACTA PHYSICO-CHIMICA SINICA,1998,14(7):590-596.
APA Yang, R.,胡天斗.,Hu, TD.,Liu, T.,Xiang, HW.,...&刘涛.(1998).Characterization of CuO-BaO/SiO2 catalysts structure.ACTA PHYSICO-CHIMICA SINICA,14(7),590-596.
MLA Yang, R,et al."Characterization of CuO-BaO/SiO2 catalysts structure".ACTA PHYSICO-CHIMICA SINICA 14.7(1998):590-596.
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