Siberian Federal University 
- Issue
- Journal of Siberian Federal University. Chemistry. 2021 14 (3)
- Authors
- Levdansky, Vladimir A.; Kondrasenko, Alexander A.; Levdansky, Alexander V.; Kuznetsov, Boris N.
- Contact information
- Levdansky, Vladimir A.: Institute of Chemistry and Chemical Technology SB RAS FRC KSC SB RAS Krasnoyarsk, Russian Federation; Kondrasenko, Alexander A.: Institute of Chemistry and Chemical Technology SB RAS FRC KSC SB RAS Krasnoyarsk, Russian Federation; Levdansky, Alexander V.: Institute of Chemistry and Chemical Technology SB RAS FRC “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; Kuznetsov, Boris N.: Institute of Chemistry and Chemical Technology SB RAS FRC KSC SB RAS Krasnoyarsk, Russian Federation; Siberian Federal University Krasnoyarsk, Russian Federation;
- Keywords
- xylan; sulfation; sulfamic acid; urea; 1,4-dioxane; xylan sulfate
- Abstract
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
- Pages
- 325–336
- DOI
- 10.17516/1998-2836-0241
- Paper at repository of SibFU
- https://elib.sfu-kras.ru/handle/2311/144183
Journal of Siberian Federal University. Chemistry / Sylfation of Birch Wood Xylan with Sulfamic Acid in 1,4-dioxane
Full text (.pdf)