Physicochemical Properties of Lignocellulosic Materialsfrom Ozonized Wood

Авторы: Mamleeva N.A., Kharlanov A.N., Kuznetsova M.V., Kosyakov D.S.
Журнал: Russian Journal of Physical Chemistry A
Том: 97
Номер: 4
Год издания: 2023
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 790
Последняя страница: 800
DOI: 10.1134/S0036024423040210
Аннотация: Lignocellulosic materials (LCMs) obtained after an ozone treatment of pine wood are studied viadiffuse reflectance ultraviolet (DRUV) spectroscopy, Raman spectroscopy, and fluorescence spectroscopy.The Raman spectra show that ozonation degrades lignin and hemicelluloses and lowers the content of amorphous cellulose. The Raman spectra of ozonized LCMs are deconvoluted to individual components for the first time. Based on results from analyzing the Raman and DRUV spectra, it is concluded that the aromatic structures of biomass with conjugated –С=С– and >С=О bonds simply degrade, while delignification with ozone is accompanied by a multiple increase in the fluorescence of the LCMs. It is shown that the luminescence spectral characteristics of LCMs are governed by the absorption of ozone, allowing us to identify the ranges of ozone consumption corresponding to the dominant degradation of lignin and polysaccharides in the biomaterial.
Добавил в систему: Харланов Андрей Николаевич

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