The Combined Application of XPS and TPD to Study of Oxygen Adsorption on Graphite-Supported Silver Clusters Full article
| Conference |
Physical Methods for Catalytic Research at the Molecular Level: International memorial K.I. Zamaraev conference 28 Jun - 2 Jul 1999 , Novosibirsk |
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| Journal |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
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| Output data | Year: 2000, Volume: 158, Number: 1, Pages: 167-172 Pages count : 6 DOI: 10.1016/S1381-1169(00)00062-5 | ||
| Tags | Oxygen adsorption, TPD, XPS | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Siberian Branch of the Russian Academy of Sciences |
Abstract:
Oxygen adsorption on supported silver depending on the cluster sizes is studied by XPS and TPD using a model carbon-supported silver catalyst. It has been shown that the electrophylic oxygen active in ethylene epoxidation is produced on the small silver clusters (≤100 Å) more effectively than on the bulk metal, most probably, due to formation of subsurface oxygen. The desorption of the electrophylic oxygen at 450 K proves the thermodynamic possibility of its participation into ethylene oxide formation. Enlargement of the silver particles decreases the amount of subsurface oxygen and results in the appearance of nucleophylic oxygen. These results are used for discussion of the possible explanation of the size effect in ethylene epoxidation over Ag/Al2O3 catalysts.
Cite:
Bukhtiyarov V.I.
, Kaichev V.V.
The Combined Application of XPS and TPD to Study of Oxygen Adsorption on Graphite-Supported Silver Clusters
Journal of Molecular Catalysis A: Chemical. 2000. V.158. N1. P.167-172. DOI: 10.1016/S1381-1169(00)00062-5 WOS Scopus РИНЦ ANCAN OpenAlex
The Combined Application of XPS and TPD to Study of Oxygen Adsorption on Graphite-Supported Silver Clusters
Journal of Molecular Catalysis A: Chemical. 2000. V.158. N1. P.167-172. DOI: 10.1016/S1381-1169(00)00062-5 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Published online: | Jul 18, 2000 |
| Published print: | Sep 8, 2000 |
Identifiers:
| Web of science: | WOS:000089201200018 |
| Scopus: | 2-s2.0-0034622687 |
| Elibrary: | 13347801 |
| Chemical Abstracts: | 2000:498679 |
| Chemical Abstracts (print): | 133:314040 |
| OpenAlex: | W1991346724 |