Study of H2, O2, CO Adsorption and CO+O2 Reaction on Pt(100), Pd(110) Monocrystal Surfaces Научная публикация
Конференция |
Physical Methods for Catalytic Research at the Molecular Level: International memorial K.I. Zamaraev conference 28 июн. - 2 июл. 1999 , Novosibirsk |
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Журнал |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
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Вых. Данные | Год: 2000, Том: 158, Номер: 1, Страницы: 155-160 Страниц : 6 DOI: 10.1016/S1381-1169(00)00060-1 | ||||||
Ключевые слова | CO oxidation, Platinum metals, Subsurface hydrides | ||||||
Авторы |
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Организации |
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Информация о финансировании (2)
1 | International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union | 1882 |
2 | Российский фонд фундаментальных исследований | 99-03-32433 |
Реферат:
Nanoscale changes in the surface morphology of Pd particles that accompany the uptake of hydrogen have been studied in situ by Field Electron Microscopy (FEM). Exposure of a Pd tip to H2 at low temperatures led to the formation of extruding PdHx particles on top of the Pd tip. Growth of these particles proceeds in a “staccato” manner. When most of the hydrogen have been removed from the sample by heating in vacuum, Pd crystallites remain on the surface. They are quite stable up to about 700 K, where they melt back into the bulk of the tip. A sharp low temperature H2-peak (220 K) appears in the TD spectra as a result of decomposition of PdHx hydrides on Pd(110) single crystal surface. During the O2+Hads reaction, a hydrogen-modified Pt(100)-(hex) surface shows an increase in the population of atomic oxygen states: three Oads states are observed by high resolution electron energy loss spectroscopy (HREELS) as a result of the presence of defect sites. The reactivity of these new oxygen states to CO has been investigated with thermal desorption spectroscopy (TDS).
Библиографическая ссылка:
Gorodetskii V.V.
, Matveev A.V.
, Cobden P.
, Nieuwenhuys B.
Study of H2, O2, CO Adsorption and CO+O2 Reaction on Pt(100), Pd(110) Monocrystal Surfaces
Journal of Molecular Catalysis A: Chemical. 2000. V.158. N1. P.155-160. DOI: 10.1016/S1381-1169(00)00060-1 WOS Scopus РИНЦ
Study of H2, O2, CO Adsorption and CO+O2 Reaction on Pt(100), Pd(110) Monocrystal Surfaces
Journal of Molecular Catalysis A: Chemical. 2000. V.158. N1. P.155-160. DOI: 10.1016/S1381-1169(00)00060-1 WOS Scopus РИНЦ
Даты:
Опубликована online: | 18 июл. 2000 г. |
Опубликована в печати: | 8 сент. 2000 г. |
Идентификаторы БД:
Web of science | WOS:000089201200016 |
Scopus | 2-s2.0-0000729771 |
РИНЦ | 13346590 |
Chemical Abstracts | 2000:498677 |
Chemical Abstracts (print) | 133:199274 |
OpenAlex | W2014284174 |