, Volume 144, Issue 2, pp 252-260
Date: 23 Nov 2013

Production of 5-Hydroxymethylfurfural from Mono- and Disaccharides in the Presence of Ionic Liquids

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The one-pot dehydration/hydrolysis of mono- and disaccharides to 5-hydroxymethylfurfural (HMF) in the presence of several imidazolium ionic liquids was efficiently performed. The study aims to make a mechanistic insights on the direct transformation of sugars to HMF, including glucose, fructose, galactose, sucrose, maltose and lactose. With the catalyst of [NMP][HSO4], a HMF yield of 87 % was achieved from sucrose. In addition, [AMIM]Cl revealed a remarkable catalytic activity for the transformation of fructose to HMF without other catalyst or co-solvent and the yield of HMF was 91.1 %. Theoretical calculation results showed that [AMIM]Cl expressed a more efficient catalytic activity than [BMIM]Cl.

Graphical Abstract

Fructose could directly convert into HMF in [AMIM]Cl without catalyst. Behaviors of disaccharides are largely determined by their basic units. The mechanism to explain the activity of [AMIM]Cl has been confirmed by using DFT method.