抄録
Levulinic acid (LA) is efficiently synthesized from glucose at moderate temperature by using Lewis/Bronsted acid catalysts in choline chloride (ChCl) solution. The yield of LA is obtained about 32.8 mol% with single Lewis acid catalyst of AlCl_3. Meanwhile, by combination of AlCl_3 with Bronsted acid catalyst of oxalic acid, the yield of LA increases to about 44.2 mol%. Furthermore, the products can be simply separated from the reaction mixture by using low boiling point organic solvents such as acetone, and simultaneously the acid catalyst/ChCl can be easily recovered for the reuse, indicating that the present process is a potential green route for the production of high value-added platform chemicals from biomass.
