| 摘要 |
The invention provides a process to separate levulinic acid from a biomass hydrolysate said process comprising extraction using as an organic solvent a substituted benzene comprising (i) at least one OR1 group wherein R1 is H or CH3; and (ii) at least one C1-3 alkyl group, wherein each of the at least one OR1 group is ortho positioned to at least one C1-3 alkyl group. Using said substituted benzene as extraction solvent gives good extraction efficiency, the extraction can advantageously be carried out at elevated temperature, and is very suitable for subsequent distillation steps. |
