Activation of the C–O Bond on the Surface of Palladium: An In situ Study by X-ray Photoelectron Spectroscopy and Sum Frequency Generation Научная публикация
| Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Вых. Данные | Год: 2005, Том: 46, Номер: 2, Страницы: 269-281 Страниц : 13 DOI: 10.1007/s10975-005-0073-0 | ||||
| Ключевые слова | Methanol; Carbonyl; Palladium; Dehydrogenation; Bond Cleavage | ||||
| Авторы |
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| Организации |
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Информация о финансировании (3)
| 1 | German Academic Exchange Service | |
| 2 | Fritz Haber Institute of the Max Planck Society | |
| 3 | Региональный общественный Фонд содействия отечественной науке |
Реферат:
An in situ study of the adsorption of CO on atomically smooth and defect Pd(111) surfaces was performed over wide ranges of temperatures (200–400 K) and pressures (10−6-1 mbar) by X-ray photoelectron spectroscopy and sum frequency generation. Both of the techniques indicated that CO was adsorbed as three-fold hollow, bridging, and terminal species to form well-known ordered structures on the surface. In the course of the in situ experiments, no signs of CO dissociation or of the formation of carbonyl structures (Pd(CO)n, n > 1) were detected. The mechanism of C-O bond activation in the course of methanol decomposition on the surface of palladium was considered. It was found that the adsorption of methanol on the surface of palladium essentially depends on pressure. Along with the well-known reaction path of methanol dehydrogenation to CO and hydrogen, a slow process of methanol decomposition with C-O bond cleavage was observed at elevated pressures. In this case, the formation of carbon deposits finally resulted in the carbonization and complete deactivation of the surface. A mechanism for C-O bond activation on the surface of palladium was proposed; the geometry of adsorption complexes plays an important role in this mechanism.
Библиографическая ссылка:
Kaichev V.V.
, Bukhtiyarov V.I.
, Rupprechter G.
, Freund H.-J.
Activation of the C–O Bond on the Surface of Palladium: An In situ Study by X-ray Photoelectron Spectroscopy and Sum Frequency Generation
Kinetics and Catalysis. 2005. V.46. N2. P.269-281. DOI: 10.1007/s10975-005-0073-0 WOS Scopus РИНЦ CAPlusCA OpenAlex
Activation of the C–O Bond on the Surface of Palladium: An In situ Study by X-ray Photoelectron Spectroscopy and Sum Frequency Generation
Kinetics and Catalysis. 2005. V.46. N2. P.269-281. DOI: 10.1007/s10975-005-0073-0 WOS Scopus РИНЦ CAPlusCA OpenAlex
Оригинальная:
Каичев В.В.
, Бухтияров В.И.
, Рупрехтер Г.
, Фройнд Х.-Й.
Активация связи С-О на поверхности палладия. Исследование in situ методами рентгеновской фотоэлектронной спектроскопии и генерации суммарной частоты
Кинетика и катализ. 2005. Т.46. №2. С.288-301. RSCI РИНЦ
Активация связи С-О на поверхности палладия. Исследование in situ методами рентгеновской фотоэлектронной спектроскопии и генерации суммарной частоты
Кинетика и катализ. 2005. Т.46. №2. С.288-301. RSCI РИНЦ
Даты:
| Поступила в редакцию: | 27 февр. 2004 г. |
| Опубликована в печати: | 1 мар. 2005 г. |
Идентификаторы БД:
| Web of science: | WOS:000228933000009 |
| Scopus: | 2-s2.0-18244363347 |
| РИНЦ: | 21935387 |
| Chemical Abstracts: | 2005:380937 |
| Chemical Abstracts (print): | 142:488210 |
| OpenAlex: | W1980158672 |