Role of anionic vacancies in lithium fluoride in the catalytic oxidation of carbon monoxide on the surface of the Au/LiF/Mo(110) system

Role of anionic vacancies in lithium fluoride in the catalytic oxidation of carbon monoxide on the surface of the Au/LiF/Mo(110) system

The oxidation of carbon monoxide molecules on the surface of gold nanoclusters formed on a lithium fluoride film has been investigated by IR spectroscopy and temperature-programed reaction. The CO oxidation rate is much higher in the case of gold clusters produced on the surface of a LiF film enrich...

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Veröffentlicht in:Kinetics and catalysis 2016-11, Vol.57 (6), p.797-802
Hauptverfasser: Silaev, I. V., Khubezhov, S. A., Tvauri, I. V., Grigorkina, G. S., Kaloeva, A. G., Ashkhotov, O. G., Sekiba, D., Ogura, S., Fukutani, K., Magkoev, T. T.
Format: Artikel
Sprache:eng
Schlagworte:
Carbon monoxide
Catalysis
Chemistry
Chemistry and Materials Science
Clusters
Electron states
Gold
Infrared spectroscopy
Lithium
Lithium fluoride
Nanoclusters
Oxidation rate
Physical Chemistry
Substrates
Vacancies
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Zusammenfassung:The oxidation of carbon monoxide molecules on the surface of gold nanoclusters formed on a lithium fluoride film has been investigated by IR spectroscopy and temperature-programed reaction. The CO oxidation rate is much higher in the case of gold clusters produced on the surface of a LiF film enriched with anionic vacancies (F-centers). This is due to the fact that the gold clusters bonded to F-centers of the substrate differ in electronic state from the clusters that are not bonded to F-centers.
ISSN:0023-1584
1608-3210
DOI:10.1134/S0023158416060148