DICP OpenIR
Study on chemisorption of H-2, O-2, CO and C2H4 on Pt-Ag/SiO2 catalysts by microcalorimetry and FTIR
Li, L; Wang, X; Shen, J; Zhou, L; Zhang, T
KeywordChemisorption Differential Heat Microcalorimetry Pt-ag/sio2
Source PublicationJOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
2005
DOI10.1007/s10973-005-6852-z
Volume82Issue:1Pages:103-107
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Analytical ; Chemistry, Physical
WOS Research AreaChemistry
WOS KeywordETHYLENE ADSORPTION ; HYDROCARBONS ; PT/SIO2
AbstractAdsorption microcalorimetry has been employed to study the interaction of ethylene with the reduced and oxidized Pt-Ag/SiO2 Catalysts with different Ag contents to elucidate the modified effect of Ag towards the hydrocarbon processing on platinum catalysts. In addition, microcalorimetric adsorption of H-2, O-2, CO and FTIR of CO adsorption were conducted to investigate the influence of Ag on the surface structure of Pt catalyst. It is found from the microcalorimetric results of H-2 and O-2 adsorption that the addition of Ag to Pt/SiO2 leads to the enrichment of Ag on the catalyst surface which decreases the size of Pt surface ensembles of Pt-Ag/SiO2 catalysts. The microcalorimetry and FTIR of CO adsorption indicates that there still exist sites for linear and bridged CO adsorption on the surface of platinum catalysts simultaneously although Ag was incorporated into Pt/SiO2. The ethylene microcalorimetric results show that the decrease of ensemble size of Pt surface sites suppresses the formation of dissociative species (ethylidyne) upon the chemsorption of C2H4 on Pt-Ag/SiO2. The differential heat vs. uptake plots for C2H4 adsorption on the oxygen-preadsorbed Pt/SiO2 and Pt-Ag/SiO2 catalysts suggest that the incorporation of Ag to Pt/SiO2 could decrease the ability for the oxidation of C2H4.
Language英语
WOS IDWOS:000233245600015
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139816
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Nanjing Univ, Dept Chem, Nanjing 210093, Peoples R China
Recommended Citation
GB/T 7714
Li, L,Wang, X,Shen, J,et al. Study on chemisorption of H-2, O-2, CO and C2H4 on Pt-Ag/SiO2 catalysts by microcalorimetry and FTIR[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2005,82(1):103-107.
APA Li, L,Wang, X,Shen, J,Zhou, L,&Zhang, T.(2005).Study on chemisorption of H-2, O-2, CO and C2H4 on Pt-Ag/SiO2 catalysts by microcalorimetry and FTIR.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,82(1),103-107.
MLA Li, L,et al."Study on chemisorption of H-2, O-2, CO and C2H4 on Pt-Ag/SiO2 catalysts by microcalorimetry and FTIR".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 82.1(2005):103-107.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, L]'s Articles
[Wang, X]'s Articles
[Shen, J]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, L]'s Articles
[Wang, X]'s Articles
[Shen, J]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, L]'s Articles
[Wang, X]'s Articles
[Shen, J]'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.