An XPS Study of the Oxidation of Noble Metal Particles Evaporated onto the Surface of an Oxide Support in Their Reaction with NO x Научная публикация
| Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Вых. Данные | Год: 2012, Том: 53, Номер: 1, Страницы: 117-124 Страниц : 8 DOI: 10.1134/S0023158412010132 | ||
| Ключевые слова | Platinum Group Metal; Model Catalyst; Tantalum Foil; Noble Metal Particle; Rhodium Oxide | ||
| Авторы |
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| Организации |
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Информация о финансировании (2)
| 1 | Российский фонд фундаментальных исследований | 09-03-91225 |
| 2 | Российский фонд фундаментальных исследований | 10-03-00596 |
Реферат:
The interaction of the model catalysts Rh/Al2O3, Pd/Al2O3, Pt/Al2O3, and Pt/SiO2 with NO x (mixture of 10 Torr of NO and 10 Torr of O2) was studied by X-ray photoelectron spectroscopy (XPS). Samples of the model catalysts were prepared under vacuum conditions as oxide films ≥100 Å in thickness on tantalum foil with evaporated platinum-group metal particles. According to transmission electron microscopic data, the platinum-group metal particle size was several nanometers. It was found by XPS that the oxidation of Rh and Pd nanoparticles in their interaction with NO x occurs already at room temperature. The particles of platinum were more stable: their oxidation under the action of NO x was observed at elevated temperatures of ∼300°C. At room temperature, the interaction of platinum nanoparticles with NO x hypothetically leads to the dissolution (insertion) of oxygen atoms in the bulk of the particles with the retention of their metallic nature. It was found that dissolved oxygen is much more readily reducible by hydrogen than the lattice oxygen of the platinum oxide particles.
Библиографическая ссылка:
Smirnov M.Y.
, Vovk E.I.
, Kalinkin A.V.
, Pashis A.V.
, Bukhtiyarov V.I.
An XPS Study of the Oxidation of Noble Metal Particles Evaporated onto the Surface of an Oxide Support in Their Reaction with NO x
Kinetics and Catalysis. 2012. V.53. N1. P.117-124. DOI: 10.1134/S0023158412010132 WOS Scopus РИНЦ CAPlusCA OpenAlex
An XPS Study of the Oxidation of Noble Metal Particles Evaporated onto the Surface of an Oxide Support in Their Reaction with NO x
Kinetics and Catalysis. 2012. V.53. N1. P.117-124. DOI: 10.1134/S0023158412010132 WOS Scopus РИНЦ CAPlusCA OpenAlex
Оригинальная:
Смирнов М.Ю.
, Вовк Е.И.
, Калинкин А.В.
, Пашис А.В.
, Бухтияров В.И.
Исследование методом РФЭС окисления частиц благородных металлов, напылённых на поверхность оксидного носителя, в реакции с NOx
Кинетика и катализ. 2012. Т.53. №1. С.120-127. РИНЦ
Исследование методом РФЭС окисления частиц благородных металлов, напылённых на поверхность оксидного носителя, в реакции с NOx
Кинетика и катализ. 2012. Т.53. №1. С.120-127. РИНЦ
Даты:
| Поступила в редакцию: | 8 апр. 2011 г. |
| Опубликована в печати: | 1 февр. 2012 г. |
| Опубликована online: | 14 февр. 2012 г. |
Идентификаторы БД:
| Web of science: | WOS:000302314100014 |
| Scopus: | 2-s2.0-84861152420 |
| РИНЦ: | 17985566 |
| Chemical Abstracts: | 2012:214995 |
| Chemical Abstracts (print): | 156:571881 |
| OpenAlex: | W2140369909 |