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Licensed Unlicensed Requires Authentication Published by De Gruyter November 3, 2011

Synthesis of glucose esters from cellulose in ionic liquids

Igor A. Ignatyev, Charlie Van Doorslaer, Pascal G.N. Mertens, Koen Binnemans and Dirk E. de Vos
From the journal

Abstract

The transformation of cellulose into glucose ester α-d-glucose pentaacetate (GPAc) was carried out in ionic liquid 1-butyl-3-methylimidazolium chloride under mild reaction conditions. The reaction comprises two steps: the first involves a hydrolysis reaction, yielding α-d-glucose and glucose oligomers; and then only after some time, the acetylating reagent acetic anhydride is added. Under optimized conditions and with the acidic resin Amberlyst 15DRY as a hydrolysis catalyst, a 70% yield of GPAc was obtained. This product could be quantitatively isolated by simple liquid-liquid extraction, which allowed easy recycling of the ionic liquid and catalyst.


Corresponding author. Center for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23 – box 2461, B-3001, Heverlee, Belgium Phone: +32-16321610 Fax: +32-16321998

Received: 2011-9-4
Accepted: 2011-10-10
Published Online: 2011-11-03
Published in Print: 2012-05-01

©2012 by Walter de Gruyter Berlin Boston

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