Integration of peroxide delignification and sulfamic acid sulfation methods for obtaining cellulose sulfates from aspen wood |
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| Authors: | Boris Kuznetsov Vladimir Levdansky Svetlana Kuznetsova Natalya Garyntseva Irina Sudakova Alexander Levdansky |
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| Affiliation: | 1.Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”,Krasnoyarsk,Russia;2.Siberian Federal University,Krasnoyarsk,Russia |
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| Abstract: | A new method to obtain cellulose sulfates from available and inexpensive raw material—aspen wood was developed. This method integrates catalytic peroxide delignification and sulfamic acid sulfation stages. Solvents such as acetic acid and water were used for isolation of pure cellulose by wood peroxide delignification with TiO2 catalyst. Low-aggressive and less-toxic sulfating agent—sulfamic acid–urea mixture was used to obtain cellulose sulfates. |
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