DICP OpenIR
Surface structure and reaction performances of highly dispersed and supported bimetallic catalysts
Lin, LW; Yang, WS; Jia, JF; Xu, ZS; Zhang, T; Fan, YN; Kou, Y; Shen, JY
KeywordMetallic Catalysis Isobutane Dehydrogenation M-1 Sites M-2 Sites
Source PublicationSCIENCE IN CHINA SERIES B-CHEMISTRY
1999-12-01
Volume42Issue:6Pages:571-580
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordALUMINA ; EXAFS ; IRON
AbstractSurface structures of Pt-Sn and Pt-Fe bimetallic catalysts have been investigated by means of Mossbauer spectroscopy, Pt-L-III -edge EXAFS and H-2-adsorption. The results showed that the second component, such as Sn or Fe, remained in the oxidative state and dispersed on the gamma-Al2O3 surface after reduction, while Pt was completely reduced to the metallic state and dispersed on either the metal oxide surface or the gamma-Al2O3 surface. By correlating the distribution of Pt species on different surfaces with the reaction and adsorption performances, it is proposed that two kinds of active Pt species existed on the surfaces of both catalysts, named M-1 sites and M-2 sites. M-1 sites are the sites in which Pr directly anchored on the gamma-Al2O3 surface, while M-2 sites are those in which Pt anchored on the metal oxide surface. M-1 sites are favorable for low temperature H-2 adsorption, and responsible for the hydrogenolysis reaction and carbon deposition, while M-2 sites which adsorb more H-2 at higher temperature, are more resistant to the deactivation due to less carbon deposition, and provide major contribution to the dehydrogenation reaction.
Language英语
URL查看原文
WOS IDWOS:000084653800003
Citation statistics
Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/86609
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Lin, LW,Yang, WS,Jia, JF,et al. Surface structure and reaction performances of highly dispersed and supported bimetallic catalysts[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,1999,42(6):571-580.
APA Lin, LW.,Yang, WS.,Jia, JF.,Xu, ZS.,Zhang, T.,...&Shen, JY.(1999).Surface structure and reaction performances of highly dispersed and supported bimetallic catalysts.SCIENCE IN CHINA SERIES B-CHEMISTRY,42(6),571-580.
MLA Lin, LW,et al."Surface structure and reaction performances of highly dispersed and supported bimetallic catalysts".SCIENCE IN CHINA SERIES B-CHEMISTRY 42.6(1999):571-580.
Files in This Item:
File Name/Size DocType Version Access License
1999205NWV0NOL.pdf(712KB) 开放获取--Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Lin, LW]'s Articles
[Yang, WS]'s Articles
[Jia, JF]'s Articles
Baidu academic
Similar articles in Baidu academic
[Lin, LW]'s Articles
[Yang, WS]'s Articles
[Jia, JF]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Lin, LW]'s Articles
[Yang, WS]'s Articles
[Jia, JF]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.