| 摘要 |
<p>A process for the reactive extraction of levulinic acid from an aqueous mixture comprising levulinic acid, wherein the aqueous mixture is contacted with a liquid esterifying alcohol, which alcohol has at least four carbon atoms and is substantially water-immiscible, at esterification conditions in the presence of a catalyst at a temperature in the range of from 50 to 250 <°>C, to form a levulinate ester, wherein the amount of alcohol is such that the liquid alcohol extracts the ester from the aqueous mixture and an aqueous phase comprising the catalyst and having a reduced levulinic acid content and an organic phase comprising alcohol and levulinate ester is formed.</p> |
