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Mechanism of Inversion of Montmorillonite Sorption Properties by Cationic Surfactantстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 апреля 2021 г.
- Авторы: Kon’kova T.V., Rysev A.P., Mishchenko E.V.
- Журнал: Inorganic Materials: Applied Research
- Том: 11
- Номер: 5
- Год издания: 2020
- Первая страница: 1110
- Последняя страница: 1115
- DOI: 10.1134/S2075113320050184
- Аннотация: Organo-mineral derivatives of montmorillonite modified by salts of quaternary ammonium compoundsare promising adsorbents for wastewater purification from heavy metal anions, as well as anionic dyesand pesticides. The understanding of the mechanism of anion adsorption by the example of montmorillonitemodified by didecyldimethylammonium chloride cationic surfactant is expanded. The high rate of chromiumanion adsorption, the appearance of adsorption capacity only during charge exchange of the surface, and thepH dependence of adsorption, including for pH-independent nitrate anions, indicate that a significant contributionto adsorption of anions is made by silanol and aluminol groups on the edge surface of the aluminosilicatelayers of the mineral. The redistribution of access to various types of adsorption centers of the surface foradsorptive is the mechanism of inversion of the adsorption properties for montmorillonite. The inner negativelycharged surface is screened by the double layer of the surfactant molecules that block the interlayer space. The surfactantmolecules are not hydrated, which impedes delamination of the mineral in aqueous medium.
- Добавил в систему: Рысев Антон Петрович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | KonKova2020_Article_MechanismOfInversionOfMontmori.pdf | 351,8 КБ | 15 октября 2020 [RysevAP] |