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Dynamics of Lignin Destruction in Pine Woodunder the Action of Ozoneстатья
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: 28 февраля 2020 г.
- Авторы: Mamleeva N.A., Kharlanov A.N., Lunin V.V.
- Журнал: Russian Journal of Physical Chemistry A
- Том: 93
- Номер: 12
- Год издания: 2019
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 2550
- Последняя страница: 2554
- DOI: 10.1134/S0036024419120185
- Аннотация: The destruction of lignin in pinewood during ozonization is studied via diffuse reflection IR spectroscopy (DRIFT) and Raman spectroscopy. The DRIFT spectra are deconvoluted into Lorentz components. Samples of dioxanlignin obtained from wood are analyzed by means of UV spectroscopy (second derivatives). Based on the DRIFT, Raman, and UV spectra, specific rates of ozone (Qr) consumption corresponding to the oxidation of different structures on the wood surface are determined. In the range of Qr ≤ 1.5 mmol/g, the predominant process is the breakdown of aromatic rings. In the range of 1.5–3.0 mmol/g, hydroxyaromatic compounds formed at the first stage of ozonization are oxidized. At Qr higher than 2.0 mmol/g, aliphatic structures of lignin are also oxidized by ozone, along with carbonyl and carboxylic oxidation products occurring on the surface. These lignin oxidation products block to some extent the accessibility of lignin for ozone.
- Добавил в систему: Харланов Андрей Николаевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | 2019.12._Dynamics_of_Lignin_Destruction_in_Pine_Wood_under_… | 770,2 КБ | 30 ноября 2019 [kharl] |