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Formation of Micro- and Mesoporous Substructures in the Course of the Leaching Process of Two-Phase Alkali Borosilicate Glassстатья
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: 28 мая 2015 г.
- Авторы: Kreisberg V.A., Antropova T.V., Kalinina S.V.
- Журнал: Glass Physics and Chemistry
- Том: 40
- Номер: 3
- Год издания: 2014
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 384
- Последняя страница: 387
- DOI: 10.1134/S1087659614030110
- Аннотация: The influence of the acid leaching conditions (duration, HCl concentration) of liquated alkali borosilicate glass with composition 7.6Na2O ⋅ 20.4B2O3 ⋅ 71.9SiO2 ⋅ 0.1Al2O3 on the porous glass (PG) structural formation has been studied with diagnostics of meso and micropores. The morphology of the PG pores has been investigated with the use of the equilibrium and kinetic adsorptiondesorption methods at low, medium, and high relative pressures. It has been established that all PG samples under study were character ized by a polymodal pore size distribution with micropore sizes ranging from 0.45 to 0.70 nm (up to 3 modes) and mesopores (from 2 to 4 modes, with a dominant bimodal distribution). At the end of the acid leaching process and with an increasing duration of treatment and acid concentration, the secondary silica structuring in the liquation channels takes place. In addition, the fraction of liquation channels free of secondary silica particles decreased, the width of the second peak attributed to mesopores increased, with a modification of their shape and packing. The fraction of micropores in the total volume of accessible pores decreased from 7.5 by up to 5.5%.
- Добавил в систему: Крейсберг Валерий Абрамович