Abstract
An efficient method for converting cellulose into 5-hydroxymethylfurfural (5-HMF) using an inexpensive ionic liquid tetrabutylammonium chloride (TBAC) and relatively low-toxicity catalyst of chromium (III) trichloride (CrCl3·6H2O) was developed. The effects of hydrochloric acid loading, catalyst dosage, reaction temperature and time on the yield of 5-HMF were surveyed to achieve optimal reaction conditions. A 5-HMF yield of 43.7% was obtained within 90 min at 140 °C using oil-bath heating. Glucose and starch were also investigated as feedstock to produce 5-HMF in TBAC/CrCl3·6H2O system, in which the 5-HMF yield was considerable. After 5-HMF was extracted, TBAC/CrCl3·6H2O could be used for several runs.
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