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The influence of low-temperature gas-phase oxidation of schungites on their structure and catalytic activityстатья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
- Авторы: GorlenkoL E., Emel'yanova G.I., Tikhonov N.A., Fionov A.B., Rozhkova N.N., Jankowska A., Lunin V.V.
- Журнал: Russian Journal of Physical Chemistry A
- Том: 78
- Номер: 8
- Год издания: 2005
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 1232
- Последняя страница: 1237
- DOI: WOS:000230855900009
- Аннотация: The influence of ozone on the structure and free-radical properties of the surface of schungite carbon was studied by the EPR, X-ray, and adsorption methods. Ozonization was found to increase the number of valence-saturated oxygen-containing, groups on the surface of carbon. As a consequence, the number of paramagnetic centers decreased. According to the X-ray data, demineralized schungites contain alpha-quartz and other silica polymorphs in addition to the microcrystalline graphite phase. Ozonization did not cause noticeable changes in the structure of schungite carbon but increased its specific surface area and adsorption capacity. The number of micropores increased severalfold. The contribution of mesopores to the total volume of pores was not large even after ozonization. A high catalytic activity of schungite (30% C) in the decomposition of ozone was observed.
- Добавил в систему: Горленко Любовь Ефремовна