X-Ray Photoelectron Study of the Interaction of H2 and H2 +O2 Mixtures on the Pt/MoO3 Model Catalyst Full article
| Journal |
Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779 |
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| Output data | Year: 2008, Volume: 49, Number: 2, Pages: 255-260 Pages count : 7 DOI: 10.1007/s10947-008-0121-5 | ||
| Tags | H2 + O2 gas mixtures, Hydrogen, Pt/MoO3 catalyst, X-ray photoelectron spectroscopy | ||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Russian Foundation for Basic Research | 07-03-00266 |
| 2 | Civilian Research and Development Foundation | RC1-2331-NO-02 |
Abstract:
The effects of H2 and H2 + O2 mixtures of varying composition on the state of the surface of the Pt/MoO3 model catalyst prepared by vacuum deposition of platinum on oxidized molybdenum foil were investigated by X-ray photoelectron spectroscopy (XPS) at room temperature and a pressure of 5–150 Torr. For samples with a large Pt/Mo ratio, the XP spectrum of large platinum particles showed that the effect of hydrogen-containing mixtures on the catalyst was accompanied by the reduction of molybdenum oxide. This effect results from the activation of molecular hydrogen due to the dissociation on platinum particles and subsequent spill-over of hydrogen atoms on the support. The effect was not observed at low platinum contents in the model catalyst (i.e., for small Pt particles). It is assumed for the catalyst that the loss of its hydrogen-activating ability is a consequence of the formation of platinum hydride. Possible participation of platinum hydride as intermediate in hydrogen oxidation to H2O2 is discussed.
Cite:
Kalinkin A.V.
, Pashis A.V.
, Bukhtiyarov V.I.
X-Ray Photoelectron Study of the Interaction of H2 and H2 +O2 Mixtures on the Pt/MoO3 Model Catalyst
Journal of Structural Chemistry. 2008. V.49. N2. P.255-260. DOI: 10.1007/s10947-008-0121-5 WOS Scopus РИНЦ ANCAN OpenAlex
X-Ray Photoelectron Study of the Interaction of H2 and H2 +O2 Mixtures on the Pt/MoO3 Model Catalyst
Journal of Structural Chemistry. 2008. V.49. N2. P.255-260. DOI: 10.1007/s10947-008-0121-5 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Калинкин А.В.
, Пашис А.В.
, Бухтияров В.И.
Исследование методом РФЭС взаимодействия Н2 и смесей Н2+О2 на модельном катализаторе Pt/MoO3
Журнал структурной химии. 2008. Т.49. №2. С.269-274. RSCI РИНЦ
Исследование методом РФЭС взаимодействия Н2 и смесей Н2+О2 на модельном катализаторе Pt/MoO3
Журнал структурной химии. 2008. Т.49. №2. С.269-274. RSCI РИНЦ
Dates:
| Submitted: | Jun 7, 2007 |
| Published print: | Mar 1, 2008 |
| Published online: | Sep 11, 2008 |
Identifiers:
| Web of science: | WOS:000257849400009 |
| Scopus: | 2-s2.0-51549096058 |
| Elibrary: | 13595123 |
| Chemical Abstracts: | 2008:941876 |
| Chemical Abstracts (print): | 149:184472 |
| OpenAlex: | W2078624533 |