Инфракрасная Спектроскопия Как Метод Определения Структурных Откликов Природных Глин На Свч-Воздействие

Abstract

Методом ИК-спектроскопии изучены структурные отклики частиц монтмориллонитовой и каолинитовой глин месторождений Оренбургской области на СВЧ-воздействие. Обработку проб в течение 10 минут проводили в поле магнетрона мощностью 750 Вт в воздушной и влажной средах. Спектры получены с помощью ИК-Фурье спектрометра в диапазоне длин волн 4000–400 cм-1. Установлено, что в монтмориллонитовой глине количество доминирующих связей в тетраэдре SiO4 снижается в 1.5 раза при обработке в сухом воздухе и в 1.8 раза – во влажном. В глине, содержащей каолинит, все типы связей активно разрушаются под воздействием СВЧ-поля.
 
 
 ИСТОЧНИК ФИНАНСИРОВАНИЯРабота выполнена при финансовой поддержке РФФИ и правительства Оренбургской области в рамках научного проекта № 19-43-560001 р_а «Физико-химические принципы процессов СВЧ-консолидации каолинитов».
 
 
 
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Thermostimulated crystal structure transformation of the polymineral clay submicron particles

“…The locations of the extreme left lines of the manganese sextets in these positions coincided. Small discrepancies between the g-factors and the hyperfine coupling constants led to a shift in the positions of the remaining sextet lines and a [25,27,29] sequential decrease in their total amplitudes so that the right line of the spectrum (in a 'strong' magnetic field) split into two. Comparing the amplitudes of these components with the amplitude of the non-split line, it can be concluded that Mn 2+ ions were in two equally probable positions in the octahedral lattice, interacting with oxygen ions (Figs.…”