MATHEMATICAL OPTIMIZATION OF THE PROCESS OF BIRCH WOOD XYLAN SULFATION BY SULFAMIC ACID IN N, N-DIMETHYLFORMAMIDE MEDIUM

UDC 54.05

  • Aleksandr Sergeyevich Kazachenko Institute of Chemistry and Chemical Technology SB RAS, FRC KSC SB RAS Email: leo_lion_leo@mail.ru
  • Vladimir Aleksandrovich Levdansky Institute of Chemistry and Chemical Technology SB RAS, FRC KSC SB RAS Email: alexsander.l@mail.ru
  • Aleksandr Vladimirovich Levdansky Institute of Chemistry and Chemical Technology SB RAS, FRC KSC SB RAS Email: alexsander.l@mail.ru
  • Boris Nikolayevich Kuznetsov Institute of Chemistry and Chemical Technology SB RAS, FRC KSC SB RAS; Siberian Federal University Email: bnk@icct.ru
DOI_disc_logo https://doi.org/10.14258/jcprm.2021027558
Keywords: xylan, sulfation, xylan sulfates, sulfamic acid, urea, N,N-dimethylformamide, process optimization

Abstract

The effect of temperature and duration of sulfation of birch wood xylan by sulfamic acid in N, N-dimethylformamide (DMF) medium in the presence of urea on the yield of sulfated xylan and on the sulphur content was studied. By mathematical optimization, the sulfation conditions have been established allowing to achieve a high yield of the obtained xylan sulfates with a high sulphur content. Under optimal sulfation conditions: temperature 100±3 °C, duration 1.5 hours, the yield of sulfated xylan reaches to 63% mas. and the content of sulfur – 17.6% mas. The presence of sulfate groups in sulfated xylan samples obtained under optimal conditions was confirmed by elemental analysis and FTIR and 13C NMR spectroscopy.

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Author Biographies

Aleksandr Sergeyevich Kazachenko, Institute of Chemistry and Chemical Technology SB RAS, FRC KSC SB RAS

кандидат химических наук, научный сотрудник лаборатории химии природного органического сырья

Vladimir Aleksandrovich Levdansky, Institute of Chemistry and Chemical Technology SB RAS, FRC KSC SB RAS

доктор химических наук, главный научный сотрудник

Aleksandr Vladimirovich Levdansky, Institute of Chemistry and Chemical Technology SB RAS, FRC KSC SB RAS

кандидат химических наук, научный сотрудник

Boris Nikolayevich Kuznetsov, Institute of Chemistry and Chemical Technology SB RAS, FRC KSC SB RAS; Siberian Federal University

доктор химических наук, профессор, заместитель директора по научной работе, заведующий лабораторией

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Published
2021-06-10
How to Cite
1. Kazachenko A. S., Levdansky V. A., Levdansky A. V., Kuznetsov B. N. MATHEMATICAL OPTIMIZATION OF THE PROCESS OF BIRCH WOOD XYLAN SULFATION BY SULFAMIC ACID IN N, N-DIMETHYLFORMAMIDE MEDIUM // chemistry of plant raw material, 2021. № 2. P. 87-94. URL: http://journal.asu.ru/cw/article/view/7558.
Issue
No 2 (2021)
Section
Biopolymers of plants

Copyright (c) 2021 chemistry of plant raw material

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