tLiquid-phase hydrogenation of methyl levulinate was studied over graphite-supported ruthenium(Ru/graphite), zeolite-supported ruthenium, and a mixture of Ru/graphite and zeolites in water at 343 K.The final �-valerolactone yield over the mixture of Ru/graphite and ZSM-5 showed the highest activitiesbetween Ru/graphite, Ru/ZSM-5, and the mixture of Ru/graphite and several zeolites. Methyl levulinatewas hydrogenated to methyl 4-hydroxyvalerate or directly to �-valerolactone over supported ruthe-nium metal sites and methyl 4-hydroxyvalerate was converted to �-valerolactone over acid sites. Themixture of Ru/graphite and ZSM-5 contained both highly dispersed ruthenium metal particles and a num-ber of acid sites rather than those over zeolite-supported ruthenium catalysts, which led to the highest�-valerolactone yield.