Abstract
Conversion of fructose into 5-hydroxymethylfurfural( HMF) was investigated in various acidic ionic liquids as catalyst and solvent. The acidic ionic liquids include SO3H-functionalized ionic liquids,imidazolebased ionic liquids and pyridine-based acid ionic liquids. The catalysts were characterized by NMR and IR. The Hammett acidity function was obatined by UV-Vis measurements with an Hammett indicator. The acid strength was compared. The results show that the acid strength of catalysts affects the reaction. Ionic liquid has a high activity without the addition of other catalyst and solvent. When 1-butyl-3-methylimidazolium chloride( BmimCl) was used as the catalyst,the yield of HMF was 74. 97% within 4 h at 120 ℃.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
