Abstract
Utilizing waste lignocellulosic biomass to synthesize biofuel precursors constructs an important way to solve the current energy crisis. In this work, we have prepared a sulfonated acid catalyst from pine needles derived biochar using chlorosulfonic acid for conversion of fructose to levulinic acid and levulinic acid to ethyl levulinate. In the best optimized conditions, sulfonated biochar as a catalyst exhibited excellent catalytic activity for the fructose conversion to levulinic acid and its esterification to ethyl levulinate with yield 33% and 97%.
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