The Combined Application of XPS and TPD to Study of Oxygen Adsorption on Graphite-Supported Silver Clusters Научная публикация
Конференция |
Physical Methods for Catalytic Research at the Molecular Level: International memorial K.I. Zamaraev conference 28 июн. - 2 июл. 1999 , Novosibirsk |
||
---|---|---|---|
Журнал |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
||
Вых. Данные | Год: 2000, Том: 158, Номер: 1, Страницы: 167-172 Страниц : 6 DOI: 10.1016/S1381-1169(00)00062-5 | ||
Ключевые слова | Oxygen adsorption, TPD, XPS | ||
Авторы |
|
||
Организации |
|
Информация о финансировании (1)
1 | Сибирское отделение Российской академии наук |
Реферат:
Oxygen adsorption on supported silver depending on the cluster sizes is studied by XPS and TPD using a model carbon-supported silver catalyst. It has been shown that the electrophylic oxygen active in ethylene epoxidation is produced on the small silver clusters (≤100 Å) more effectively than on the bulk metal, most probably, due to formation of subsurface oxygen. The desorption of the electrophylic oxygen at 450 K proves the thermodynamic possibility of its participation into ethylene oxide formation. Enlargement of the silver particles decreases the amount of subsurface oxygen and results in the appearance of nucleophylic oxygen. These results are used for discussion of the possible explanation of the size effect in ethylene epoxidation over Ag/Al2O3 catalysts.
Библиографическая ссылка:
Bukhtiyarov V.I.
, Kaichev V.V.
The Combined Application of XPS and TPD to Study of Oxygen Adsorption on Graphite-Supported Silver Clusters
Journal of Molecular Catalysis A: Chemical. 2000. V.158. N1. P.167-172. DOI: 10.1016/S1381-1169(00)00062-5 WOS Scopus РИНЦ
The Combined Application of XPS and TPD to Study of Oxygen Adsorption on Graphite-Supported Silver Clusters
Journal of Molecular Catalysis A: Chemical. 2000. V.158. N1. P.167-172. DOI: 10.1016/S1381-1169(00)00062-5 WOS Scopus РИНЦ
Даты:
Опубликована online: | 18 июл. 2000 г. |
Опубликована в печати: | 8 сент. 2000 г. |
Идентификаторы БД:
Web of science | WOS:000089201200018 |
Scopus | 2-s2.0-0034622687 |
РИНЦ | 13347801 |
Chemical Abstracts | 2000:498679 |
Chemical Abstracts (print) | 133:314040 |
OpenAlex | W1991346724 |