Degradation of the Pine Wood Structure in Ozonolytic Delignification

Mamleeva, N.A.; Kharlanov, A.N.; Chukhchin, D.G.; Bazarnova, N.G.; Lunin, V.V.

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: 17 февраля 2021 г.

Авторы: Mamleeva N.A., Kharlanov A.N., Chukhchin D.G., Bazarnova N.G., Lunin V.V.
Журнал: Russian Journal of Bioorganic Chemistry
Том: 46
Номер: 7
Год издания: 2020
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 1330
Последняя страница: 1336
DOI: 10.1134/S1068162020070080
Аннотация: Transformations of pine wood during exposure to ozone were studied. The content of lignin andcellulose in the cellulose-containing material (CCM) from ozonated wood was determined. The polymerizationdegree (PD) of cellulose from CCM was determined. The CCM samples were examined by diffusereflectance infrared Fourier transform (DRIFT) spectroscopy and X-ray diffraction (XRD) analysis. HPLCanalysis of water-soluble lignin ozonolysis products was performed. Wood ozonation leads to lignin destruction;40–42% delignification degree is achieved. The destruction of aromatic components is confirmed byDRIFT spectra. A decrease in the intensity of skeletal vibrations of aromatic ring at 1511 and 1598 cm–1, bandsat 1662 cm–1, and an increase in the intensity of stretching C=O vibrations of lignin and hemicelluloses (HCs)at 1736 cm–1 were observed. The stoichiometric ratio of the amount of absorbed ozone and the destroyedguaiacyl units, as well as the composition of water-soluble products, shows that ozonolysis is the main mode показать полностью...
Добавил в систему: Мамлеева Надежда Алексеевна

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