Acid-catalyzed dehydration of fructose and inulin with glycerol or glycerol carbonate as renewably sourced co-solvent.
Ionic liquids (ILs) can be partially substituted by glycerol or glycerol carbonate as cheap, safe, and renewably sourced co-solvents in the acid-catalyzed dehydration of fructose and inulin to 5-hydroxymethylfurfural (HMF). In the particular case of glycerol, we found that HMF can be conveniently extracted from the IL/glycerol (65:35) mixture with methylisobutylketone, limiting the reactivity of glycerol with HMF and allowing the recovery of HMF with a high purity (95 %). Influences of the fructose content, temperature, and the nature of the ionic liquid are also discussed. The possible use of industrial-grade glycerin is also investigated. We demonstrate that by using glycerol carbonate, up to 90 wt % of the IL can be successfully substituted, decreasing the environmental costs of traditional IL-based processes.
Benoit
Maud
M
Université de Poitiers-CNRS, France.
Brissonnet
Yoan
Y
Guélou
Erwan
E
De Oliveira Vigier
Karine
K
Barrault
Joël
J
Jérôme
François
F
D000143:Acids / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D005632:Fructose / Q000737:chemistry*; D005990:Glycerol / Q000737:chemistry*; D007444:Inulin / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000737:chemistry*
D000143:Acids; D012997:Solvents; D014867:Water; D005632:Fructose; D007444:Inulin; D005990:Glycerol