A series of B₂O₃ modified Cu/Al₂O₃ catalysts were prepared for the hydrogenolysis of glucose. The catalysts were fully characterized by BET, ICP, N₂O adsorptive decomposition, XRD, SEM, TG, H₂-TPR, CO-FTIR, XPS, and NH₃-TPD. The strong interaction between B₂O₃ and CuO could promote the dispersion of copper and inhibit the reduction of CuO, creating a proper mol ratio of Cu^δ+/Cu⁰ for the hydrogenolysis of glucose to oxygen-containing chemicals. Furthermore, the doping of B₂O₃ also introduced more acid sites onto the CuB/Al₂O₃ catalysts, which is favorable for the cleavage of hydroxyl through dehydration. Therefore, the selective hydrogenolysis of glucose to 1,2-propanediol was dependent on the contribution of Cu^δ+, Cu⁰, and acid sites. The catalytic activity and 1,2-propanediol selectivity were improved significantly by doping B₂O₃ into Cu/Al₂O₃. Among the catalysts, 1CuB/Al₂O₃ showed the highest selectivity for 1,2-propanediol, with the value of 49.5% at 96.6% conversion of glucose.

制备了一系列的B ₂ O ₃改性的Cu / Al ₂ O ₃催化剂，用于葡萄糖的氢解。通过BET，ICP，N ₂ O吸附分解，XRD，SEM，TG，H ₂ -TPR，CO-FTIR，XPS和NH ₃ -TPD对催化剂进行了充分表征。B ₂ O ₃与CuO之间的强相互作用可以促进铜的分散并抑制CuO的还原，从而形成适当的摩尔比^Cuδ+ / Cu ^0，用于葡萄糖氢解为含氧化合物。此外，B ₂ O ₃的掺杂还向CuB / Al ₂ O ₃催化剂上引入了更多的酸位，这有利于通过脱水裂解羟基。因此，葡萄糖选择性氢解成1,2-丙二醇取决于^Cuδ+，Cu ⁰和酸位点的贡献。通过将B ₂ O ₃掺杂到Cu / Al ₂ O _3中，可显着提高催化活性和1,2-丙二醇的选择性。在这些催化剂中，1CuB / Al ₂ O ₃对1,2-丙二醇的选择性最高，在葡萄糖转化率为96.6％时为49.5％。