ar0005">Ion exchange resins are effective catalysts for butyl levulinate production at 80 °C.
ar0010">Selectivity to butyl levulinate is higher than 99% over acidic ion exchangers.
ar0015">High swelling capacity and low acid site density are key for the synthesis of the ester.
ar0020">Gel-type resins with low crosslinking degree are the best catalysts.