Abstract
5-Hydroxymethylfurfural (HMF) and furfural (FF), two bio-based platform chemicals, were produced from various raw lignocellulosic materials (corncob, corn stover, wheat straw, rice straw and sugarcane bagasse) in a water-tetrahydrofuran media by using NaHSO4 as catalyst. The influences of reaction temperature (160–200 °C), reaction time (30–120 min), solvent volume ratio, feedstock concentration (2.4wt%–11.1wt%) and catalyst dosage were studied. The highest HMF and FF yields obtained from corncob were 47mol% and 56mol% under condition of 190 °C, 90 min, 10/1 of THF/H2O. Besides, the lignin in the raw biomass was also depolymerized into organosolv lignin.
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