Образование 10 Å фазы со структурой галлуазита в гидротермальных условиях при варьировании химической предыстории исходной композиции

Мы изучили процесс получения наноструктурного галлуазита путем варьирования параметров для создания исходной композиции. Исходная композиция была синтезирована совместным гидролизом (C₃H₇O)₃Al и (C₂H₅O)₄Si в системе C₆H₁₄–NH₃·H₂O. Гидросиликат алюминия состава Al₂Si₂O₅(OH)₄  был синтезирован в гидротермальных условиях (220°C, 2 МПа, 96 ч). Были получены частицы пластинчатой морфологии со средней длиной 100-200 нм и толщиной 60 нм. Анализ образцов методом порошковой дифрактометрии выявил наличие двух фаз: пластинчатого каолинита, а другой - образование галлуазитоподобной фазы. Исследования синтезированных образцов методом ИК-спектроскопии и термического анализа выявили присутствие органически модифицированного гидросиликата с фазовым переходом около 412 °С. Полученная фаза перспективна для изучения процессов адсорбции и дальнейшей эксфолиации.

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