Inhibition of acid-catalyzed depolymerization of cellulose with boric acid in non-aqueous acidic media |
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Authors: | Kawamoto Haruo Saito Shinya Saka Shiro |
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Affiliation: | Graduate School of Energy Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan. kawamoto@energy.kyoto-u.ac.jp |
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Abstract: | Boric acid inhibited the acid-catalyzed depolymerization of cellulose in sulfolane, a non-aqueous medium, at high temperature. Formation of the dehydration products such as levoglucosenone, furfural, and 5-hydroxymethyl furfural were also effectively inhibited. Similar inhibition was observed for cellooligosaccharides and starch, although the glucosidic bonds in methyl glucopyranosides and methyl cellobioside were cleaved to form alpha-d-glucofuranose cyclic 1,2:3,5-bisborate. |
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Keywords: | Cellulose Starch Acid-catalyzed depolymerization Boric acid Sugar borate Cellooligosaccharide |
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