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Ionic liquid binary mixtures: Promising reaction media forcarbohydrate conversion into 5-hydroxymethylfurfural

  • Autori: D'Anna, F.; Marullo, S.; Vitale, P.; Rizzo, C.; LO MEO, P.; Noto, R.
  • Anno di pubblicazione: 2014
  • Tipologia: Articolo in rivista (Articolo in rivista)
  • Parole Chiave: ionic liquids, binary mixtures, carbohydrate conversion, 5-HMF
  • OA Link:


The conversion of carbohydrates into 5-hydroxymethylfurfural (5-HMF) has been studied in binary mixtures of ionic liquids (ILs), using strongly acidic resin Amberlyst 15 as the catalyst. In particular, both mono- and disaccharides, such as fructose, glucose and sucrose have been investigated. Considering the favorable effect exerted by chloride-based ionic liquids in the dissolution of carbohydrates, we used binary mixtures of 1-butyl-3-methylimidazolium chloride ([bmim][Cl]) with [bmim+] based ionic liquids differing in size, shape and coordination ability of the anion ([bmim][BF4], [bmim][N(CF3SO2)2], [bmim][N(CN)2], [bmim][SbF6] and [bmim][CF3SO3]). Carbohydrate conversion in [bmim][BF4]/[bmim][Cl] binary mixtures, has been studied under both magnetic stirring and ultrasound (US) activation. The catalytic system used led to the formation of 5-hydroxymethylfurfural in good yield under mild conditions. A significant influence of IL binary mixture composition on the outcome of the target processes was evidenced. Improvements in both reaction time and temperature have been observed, under US activation.