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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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On the Question of Finding Relationship Between Structural Features of Smectites and Adsorption and Surface Properties of Bentonitesстатья
- Авторы: Krupskaya Victoria, Zakusin Sergey, Zakusina Olga, Belousov Petr, Pokidko Boris, Morozov Ivan, Zaitseva Tatiana, Tyupina Ekaterina, Koroleva Tatiana
- Журнал: Minerals
- Том: 15
- Номер: 1
- Год издания: 2024
- Первая страница: 30
- Последняя страница: 30
- DOI: 10.3390/min15010030
- Аннотация: During the development of the disposal concept in a crystalline massif of the Russian Federation, a question arose regarding the selection of the most suitable types of bentonite for a buffer layer. Data on the composition, structure, surface, and adsorption properties of four promising deposits have been obtained. The correlations between genesis and specific surface area (SSA) revealed in this study indicate that bentonites of volcanogenic-sedimentary origin have lower SSA in comparison with those of sedimentary and hydrothermal origin. The main contribution to the charge of the 2:1 layer is made by isomorphic substitutions in the tetrahedral sheet, which directly affects the sorption properties of bentonites. The influence of smectite structure on adsorption properties have been described. In particular, the dependencies between the layer charge and cation exchange capacity (CEC) have been analyzed. At the same time, the research indicates that, unlike the CEC, the specific surface area of a deposit is determined by its geological history. Special attention is being paid to refining methodological approaches for deriving crystal chemical formulae of smectites, which will be needed in the future for modelling changes in bentonite over a long-term perspective.
- Добавил в систему: Нестеренко Анастасия Андреевна