Vapor-phase hydrogenation of levulinic acid (LA) to γ-valerolactone (GVL) was investigated over Al₂O₃-supported bimetallic CuCo catalysts with different Cu/Co weight ratios under ambient H₂ pressure. The bimetallic Cu-Co/Al₂O₃ catalyst with a Cu/Co weight ratio of 8/12 exhibits an excellent catalytic activity and stability: it showed a high GVL productivity of 5.46 kg kg_cat.⁻¹ h⁻¹ with a GVL selectivity higher than 99% at 250 °C for 24 h. In the characterization of the catalysts, powder X-ray diffraction suggests that bimetallic CuCo particles on the Cu-Co/Al₂O₃ catalysts are composed of an alloy.

在Al ₂ O ₃负载的Cu / Co重量比不同的Al ₂ O ₃负载双金属Cu Co催化剂上，在环境H ₂压力下，研究了乙酰丙酸（LA）的气相加氢成γ-戊内酯（GVL）。Cu / Co重量比为8/12的双金属Cu-Co / Al ₂ O ₃催化剂具有出色的催化活性和稳定性：显示出5.46 kg kg催化剂的高GVL生产率_。^-1  h ^-1，在250°C下保持24小时的GVL选择性高于99％。在催化剂的表征中，粉末X射线衍射表明在Cu-Co / Al ₂ O ₃上的双金属Cu Co颗粒 催化剂由合金组成。