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Catalytic conversions of chloroolefins over iron oxide nanoparticles 2. Isomerization of dichlorobutenes over iron oxide nanoparticles stabilized on the surface of ultradispersed poly(tetrafluoroethylene)статья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Rostovshchikova T.N., Korobov M.S., Pankratov D.A., Yurkov G.Y., Gubin S.P.
- Журнал: Russian Chemical Bulletin
- Том: 54
- Номер: 6
- Год издания: 2005
- Издательство: Springer Nature
- Местоположение издательства: Switzerland
- Первая страница: 1425
- Последняя страница: 1432
- DOI: 10.1007/s11172-005-0422-1
- Аннотация: Nanosized iron oxides stabilized on the surface of ultradispersed poly(tetrafluoroethylene) (UPTFE) granules were synthesized by the thermal destruction of iron formate in boiling bed of UPTFE on the surface of heated mineral oil. The particle size of nanoparticles (similar to 6 nm) containing 5, 10, and 16 wt.% Fe depends weakly on the temperature of synthesis and iron to polymer ratio. The metal state is determined by the synthesis conditions. The nanoparticles synthesized at 280 degrees C consist mainly of the Fe(3)O(4) and Fe(2)O(3) phases. The samples obtained at 320 degrees C also contain iron(ii) oxide. The catalytic properties of the obtained samples were tested in dichlorobutene isomerization. Unlike isomerization on the iron oxide nanoparticles supported on silica gel, reaction over the UPTFE supports proceeds without an induction period. The sample with 10 wt.% Fe containing magnetically ordered gamma-Fe(2)O(3) nanoparticles possesses the highest catalytic activity. Fast electron exchange between the iron ions in different oxidation states and high defectiveness of the nanoparticles contribute, most likely, to the catalytic activity.
- Добавил в систему: Панкратов Денис Александрович