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Free keywords:
Microwave;
Hydrogenation;
γ-Valerolactone;
Levulinic acid;
Alkyl levulinates;
Ruthenium
Abstract:
Abstract γ-Valerolactone can be synthesized by reduction of levulinic acid and its esters in the presence of secondary alcohols as hydrogen donors and Ru/C as catalyst. The reaction rate increases when using microwave heating. Quantitative formation of γ-valerolactone was observed within 25 min at 160 °C under microwave heating based on levulinic acid and i-propanol. The reaction appears to proceed via a dehydrogenation–hydrogenation sequence.