Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.17516/1998-2836-0241

Ключевые слова: xylan, sulfation, sulfamic acid, urea, 1,4-dioxane, xylan sulfate

Аннотация: Sulfation of birch wood xylan in 1,4-dioxane by sulfamic acid in the presence of urea at 90 and 100 degrees C was studied for the first time. The effect of the duration of xylan sulfation on the yield of xylan sulfates and the sulfur content in them was studied. It was found that the sulfur content in the obtained xylan sulfates increases from 12.5 to 17.5 wt% with an increase in the duration of sulfation from 2 to 4 hours. The structure of initial and sulfated xylan was studied by FTIR and NMR spectroscopy. The ease of purification of the obtained xylan sulfates from 1,4-dioxane in comparison with the purification of xylan sulfates obtained by sulfation in pyridine and N, N-dimethylformamide is an advantage of the proposed method of xylan sulfation. Sulfation of birch wood xylan in 1, 4-dioxane by sulfamic acid in the presence of urea at 90 and 100 °C was studied for the first time. The effect of the duration of xylan sulfation on the yield of xylan sulfates and the sulfur content in them was studied. It was found that the sulfur content in the obtained xylan sulfates increases from 12.5 to 17.5 wt% with an increase in the duration of sulfation from 2 to 4 hours. The structure of initial and sulfated xylan was studied by FTIR and NMR spectroscopy. The ease of purification of the obtained xylan sulfates from 1, 4-dioxane in comparison with the purification of xylan sulfates obtained by sulfation in pyridine and N, N dimethylformamide is an advantage of the proposed method of xylan sulfation. © Siberian Federal University. All rights reserved.

Журнал: JOURNAL OF SIBERIAN FEDERAL UNIVERSITY-CHEMISTRY

Выпуск журнала: Vol. 14, Is. 3

Номера страниц: 325-336

ISSN журнала: 19982836

Место издания: KRASNOYARSK

Издатель: SIBERIAN FEDERAL UNIV

• Levdansky Vladimir A. (FRC KSC SB RAS, Inst Chem & Chem Technol SB RAS, Krasnoyarsk, Russia)
• Kondrasenko Alexander A. (FRC KSC SB RAS, Inst Chem & Chem Technol SB RAS, Krasnoyarsk, Russia)
• Levdansky Alexander (FRC KSC SB RAS, Inst Chem & Chem Technol SB RAS, Krasnoyarsk, Russia)
• Kuznetsov Boris N. (FRC KSC SB RAS, Inst Chem & Chem Technol SB RAS, Krasnoyarsk, Russia; Siberian Fed Univ, Krasnoyarsk, Russia)

• Web of Science Core Collection
• Scopus
• Ядро РИНЦ (eLIBRARY.RU)
• Список ВАК