The Determination of Adsorption Site Structures of High Dispersed Oxides by EXAFS Spectroscopy Using Molecules as Probe 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: 287-291 Страниц : 5 DOI: 10.1016/S1381-1169(00)00092-3 | ||
Ключевые слова | EXAFS, Nanoparticles, Oxides, Probe, Surface | ||
Авторы |
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Организации |
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Реферат:
The structure of adsorption sites of highly dispersed oxides, such as TiO2, Fe2O3, and ZnO, was investigated by means of H2Se adsorption. The nanoparticles were studied with a specific surface area not less than 50 m2/g. The oxide surface was activated either by mechanical activation or by high temperature treatment in a gas flow. Irreversible H2Se adsorption was carried out up to saturation in H2 excess at room temperature. EXAFS spectra of the SeK edge were measured and analyzed. The ratio between point and extended defects as a function of the activation conditions was determined for TiO2. It was shown that oxygen, being removed from the Fe2O3 surface during the activation, is not associated with the presence of a cation in the interstitial positions. It was shown for ZnO that a change in the ratio between cation and anion vacations depends on the duration of the mechanical treatment. Perspectives of this approach and possibilities of using the probes are described.
Библиографическая ссылка:
Kriventsov V.V.
, Kochubey D.I.
The Determination of Adsorption Site Structures of High Dispersed Oxides by EXAFS Spectroscopy Using Molecules as Probe
Journal of Molecular Catalysis A: Chemical. 2000. V.158. N1. P.287-291. DOI: 10.1016/S1381-1169(00)00092-3 WOS Scopus РИНЦ
The Determination of Adsorption Site Structures of High Dispersed Oxides by EXAFS Spectroscopy Using Molecules as Probe
Journal of Molecular Catalysis A: Chemical. 2000. V.158. N1. P.287-291. DOI: 10.1016/S1381-1169(00)00092-3 WOS Scopus РИНЦ
Даты:
Опубликована online: | 18 июл. 2000 г. |
Опубликована в печати: | 8 сент. 2000 г. |
Идентификаторы БД:
Web of science | WOS:000089201200035 |
Scopus | 2-s2.0-0034623038 |
РИНЦ | 13360467 |
Chemical Abstracts | 2000:498696 |
Chemical Abstracts (print) | 133:314041 |
OpenAlex | W2023455279 |