Abstract
Hydrogenation of levulinic acid (LA) to gamma-valerolactone (GVL) is among the most promising reactions for valorization of biomass and manufacturing of fine chemicals and liquid fuels. GVL synthesized from lignocellulose biomass is, potentially, a universal semiproduct for the production of fuel additives and reagents. Development of the effective process for synthesis of GVL is of urgent importance. The catalyst containing RuO 2 particles stabilized in the polymer matrix of hypercrosslinked polystyrene NM100 (5% Ru/MN100) was developed for selective hydrogenation of LA to GVL. The catalyst and the catalytic behavior was characterized using physicochemical techniques (low temperature nitrogen adsorption, TEM, REM, XPS, FTIR). The synthesized 5%-Ru/MN100 catalyst was shown to provide more than 99 % yield of GVL under mild conditions (90 °C, partial hydrogen pressure 2 MPa) in an aqueous medium that makes it competitive with the commercial 5%-Ru/C catalyst.
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