Synthesis of glucose esters from cellulose in ionic liquids

Igor A. Ignatyev; Charlie Van Doorslaer; Pascal G.N. Mertens; Koen Binnemans; Dirk E. de Vos

doi:10.1515/hf.2011.161

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 Holzforschung

https://doi.org/10.1515/hf.2011.161

Showing a limited preview of this publication:

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.

Keywords: acetylation; acid catalysis; cellulose; ionic liquids; heterogeneous catalysis

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

Synthesis of glucose esters from cellulose in ionic liquids

Abstract

Journal and Issue

Articles in the same Issue