X-Ray Photoelectron Study of the Interaction of H2 and H2 +O2 Mixtures on the Pt/MoO3 Model Catalyst Научная публикация
| Журнал |
Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779 |
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| Вых. Данные | Год: 2008, Том: 49, Номер: 2, Страницы: 255-260 Страниц : 7 DOI: 10.1007/s10947-008-0121-5 | ||
| Ключевые слова | H2 + O2 gas mixtures, Hydrogen, Pt/MoO3 catalyst, X-ray photoelectron spectroscopy | ||
| Авторы |
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| Организации |
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Информация о финансировании (2)
| 1 | Российский фонд фундаментальных исследований | 07-03-00266 |
| 2 | Civilian Research and Development Foundation | RC1-2331-NO-02 |
Реферат:
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.
Библиографическая ссылка:
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 CAPlusCA 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 CAPlusCA OpenAlex
Оригинальная:
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
Даты:
| Поступила в редакцию: | 7 июн. 2007 г. |
| Опубликована в печати: | 1 мар. 2008 г. |
| Опубликована online: | 11 сент. 2008 г. |
Идентификаторы БД:
| Web of science: | WOS:000257849400009 |
| Scopus: | 2-s2.0-51549096058 |
| РИНЦ: | 13595123 |
| Chemical Abstracts: | 2008:941876 |
| Chemical Abstracts (print): | 149:184472 |
| OpenAlex: | W2078624533 |