Simple and selective conversion of fructose into HMF using extractive-reaction process in microreactor
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An extractive-reaction process for the synthesis of HMF from fructose was implemented in microreactor. Experimental conditions were 10 wt.% fructose in water, MIBK as extracting solvent and HCl as catalyst in a temperature window of 120–160 °C, a MIBK/H2O ratio 1 to 9 and an HCl concentration of 0.25–2 M. The dehydration of fructose to HMF is achieved in less than 40s with a total HMF yield higher than 90% at 150 °C. Aqueous and organic phase spontaneously separate at the outlet of the reactor and HMF is obtained in MIBK with a yield of 80% and a purity of 92%.
KeywordsHMF Microreactor Continuous extraction
J. L. gratefully acknowledges financial support by “Institut de Chimie de Lyon” (ICL). Authors would like to thank F. Bornette for technical assistance.