Sylfation of Birch Wood Xylan with Sulfamic Acid in 1,4-dioxane

Autor:	Boris N. Kuznetsov, Alexander A. Kondrasenko, Alexander V. Levdansky, Vladimir A. Levdansky
Rok vydání:	2021
Předmět:	animal structures Birch wood General Chemical Engineering technology industry and agriculture Xylan (coating) food and beverages macromolecular substances General Chemistry 1 4-Dioxane carbohydrates (lipids) chemistry.chemical_compound chemistry Sulfamic acid Organic chemistry
Zdroj:	Journal of Siberian Federal University. Chemistry. 14:325-336
ISSN:	2313-6049 1998-2836
DOI:	10.17516/1998-2836-0241
Popis:	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
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d8c5ea1b6ba5deb2493be49e7db97b0c https://doi.org/10.17516/1998-2836-0241 Zobrazit plný text záznamu