Abstract
We studied the direct synthesis of 5-hydroxymethylfurfural (5-HMF) from cottonseed hull biomass under acid condition in one-pot. The influence of HCl dosage, reaction temperature and time, CrCl3·6H2O amount, and cottonseed hull loading on the yield of 5-HMF was investigated. As a result, a 5-HMF yield up to 51% was obtained using 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) catalyzed with chromium (III) chloride at 130 °C for 2 h. The [Bmim]Cl/CrCl3·6H2O/HCl system was found to have high activity and selectivity for the dehydration of cellulose into 5-hydroxymethylfurfural. This work provides a low cost, environment-friendly and energy-efficient process to directly convert raw biomass into bio-fuels and chemicals.
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