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Plant biomass ozonation. UV spectra of lignin isolated from ozonized pine and aspen woodстатья
- Авторы: Mamleeva N.A., Lunin V.V.
- Журнал: Высшая Школа, Scientific Research of The SCO Countries. - Reports in English
- Том: 2
- Номер: August,31
- Год издания: 2019
- Первая страница: 122
- Последняя страница: 130
- DOI: 10.34660/INF.2019.15.36319
- Аннотация: 注解。 通过紫外光谱研究松树和白杨木臭氧化中的木质素转化。 对从初始 和臭氧化木材中分离的二恶烷 - 木质素的UV二阶导数光谱（第二光谱）进行了分 析。 结果表明，木材臭氧化中木质素转化的主要途径是芳环的破坏。 此外，还进 行芳烃的改性。 发生芳香醛，酮和碳酸的形成。 在相同的臭氧消耗水平下，与落叶木中的木质素相比，软木木质素的破坏效果 较差。 在松树臭氧化产品中，与白杨木相比，芳香醛和酮占主导地位。 该结果应 该是由于落叶和软木质素组成之间的差异。 关键词：木材臭氧化，木质木质素破坏，二恶烷 - 木质素，紫外二阶导数光谱 Annotation. Lignin conversion in pine and aspen wood ozonation was investigated by UV- spectroscopy. It was carried out the analysis of the UV second derivative spectra (2nd spectra) of dioxan-lignin isolated from initial and ozonized wood. It is shown that the dominant pathway of lignin conversion in wood ozonation is a destruction of aromatic rings. Besides, modification of aromatics takes place. Formation of aromatic aldehydes, ketones and carbon acids occurs. At the same ozone consumption level, the softwood lignin destruction is less effective as compared to lignin in the deciduous wood. In the products of pine ozonation, aromatic aldehydes and ketones dominate in comparison to aspen wood. This result is supposed to be due to the difference between deciduous and soft lignin composition.
- Добавил в систему: Мамлеева Надежда Алексеевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | kopiya_statya_kitaj_31_avg.docx | 3,2 МБ | 23 сентября 2019 [MamleevaNA] | |
| 2. | 31aug_content.docx | 31aug_content.docx | 5,8 МБ | 23 сентября 2019 [MamleevaNA] |