01502nab a2200205 4500 20260520000845.0 260224s2009 xxu Synthesis of -valerolactone by hydrogenation of biomass-derived Levulinic acid over Ru/C catalyst jul./ago. 2009 15/06/2010 ; 15/06/2010 6 p. ; 3853-3858 Transcripción del resumen del autor. Ru/C catalyst was used in hydrogenation of levulinic acid to produce -valerolactone. The conversion rate and the selectivity of levulinic acid to -valerolactone with Ru/C as catalyst were higher than those with Pd/C, Raney nickel, and Urushibara nickel. The optimum preparation conditions of -valerolactone by hydrogenation of levulinic acid catalyzed by Ru/C were as follows: temperature at 130 °C, hydrogen pressure at 1.2 MPa, dosage of catalyst at 5.0% (based on the mass fraction of levulinic acid), the solvent being methanol, and a reaction time of 160 min. The conversion rate of levulinic acid to -valerolactone was found to be 92%, and the selectivity of -valerolactone was 99%. The surface structure variations of the fresh and used catalysts were characterized by XRD and XPS. Furthermore, the reaction pathway for the hydrogenation of levulinic acid was proposed. 4 Energy & fuels 23 ARTICULO Yan, Zhi-pei 42734 Lin, Lu 40812 Liu, Shijie 35367 171057 171057 0 0 0 0 238876 BAAB BAAB 2026-03-05 200045915 0 200045915 2026-03-05 15:13:26 2026-03-05 ARTICULO