Sciact
  • EN
  • RU

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
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 Kalinkin A.V. 1 , Pashis A.V. 1 , Bukhtiyarov V.I. 1
Affiliations
1 G. K. Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, Novosibirsk

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
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
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
Citing:
DB Citing
Web of science 3
Scopus 3
Elibrary 3
OpenAlex 4
Altmetrics: