Исследование термощелочной активации лигнина из соломы пшеницы, строения и свойств получаемых активных углей
Abstract
Изучено влияние условий термообработки лигнина, выделенного из соломы пшеницы, на структуру и адсорбционные свойства получаемых углеродных материалов (УМ). Термоактивация лигнина КОН и NaOH способствует развитию удельной поверхности получаемых УМ до 2680 м2/г и пористого объема до 1,35–1,39 см3/г. Предварительная карбонизация лигнина при 800 °С, предшествующая активации щелочами, несколько снижает удельную поверхность (до 2000 м2/г), но способствует формированию микропористых УМ с узким распределением пор по размерам (1,7–1,9 нм). Полученные УМ обладают высокой сорбционной активностью по отношению к бензолу и водороду.Downloads
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