Ruthenium-copper bimetallic catalysts supported on modified zirconia (m-ZrO₂, 2%CaO-ZrO₂, 3%SO₄-ZrO₂ and 10%WO₃-ZrO₂) were investigated in hydrogenolysis of glycerol in aqueous solution to produce 1,2-propanediol (1,2-PDO). Catalysts were characterized by N₂ physisorption (BET), H₂ and CO chemisorption, X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Active metallic phase consists of Ru-Cu nanoparticles with average diameter of 1.2 nm when supported on m-ZrO₂ and 2%CaO-ZrO₂, and larger particles on 3%SO₄-ZrO₂ and 10%WO₃-ZrO₂. In all cases, the addition of Cu to the Ru-based catalysts resulted in a decrease in glycerol conversion and increase in selectivity to 1,2-PDO. At 453 K, the best performing catalyst was bimetallic Ru-Cu/m-ZrO₂. The catalysts supported on 3%SO₄-ZrO₂ showed activity well below expectations, likely due to sulfur poisoning. On the other hand, catalysts supported on 2%CaO-ZrO₂ or 10%WO₃-ZrO₂ showed adequate activity. An increase in 40% in H₂ pressure decreased 1,2-PDO selectivity but caused a ten-fold increase in TOF over Ru-Cu/10%WO₃-ZrO₂, to around 0.11 s⁻¹. Cu addition to Ru lead to site blockage, with a beneficial effect on tuning selectivity towards C-O cleavage, and depressing C-C cleavage.

研究了负载在改性氧化锆（m-ZrO ₂、2%CaO-ZrO ₂、3%SO ₄ -ZrO ₂和10%WO ₃ -ZrO ₂）上的钌铜双金属催化剂在水溶液中氢解甘油制备1 ,2-丙二醇 (1,2-PDO)。催化剂通过 N ₂物理吸附 (BET)、H ₂和 CO 化学吸附、X 射线衍射 (XRD)、透射电子显微镜 (TEM) 和 X 射线光电子能谱 (XPS) 进行表征。活性金属相由负载在 m-ZrO ₂和 2%CaO-ZrO ₂上时平均直径为 1.2 nm 的 Ru-Cu 纳米粒子组成，以及负载在 3%SO ₄上的较大粒子-ZrO ₂和10%WO ₃ -ZrO ₂。在所有情况下，向 Ru 基催化剂中添加 Cu 会导致甘油转化率降低并增加对 1,2-PDO 的选择性。在 453 K 时，性能最好的催化剂是双金属 Ru-Cu/m-ZrO ₂。负载在 3%SO ₄ -ZrO ₂上的催化剂显示出远低于预期的活性，可能是由于硫中毒。另一方面，负载在2%CaO-ZrO ₂或10%WO ₃ -ZrO ₂上的催化剂表现出足够的活性。H ₂压力增加 40% 会降低 1,2-PDO 的选择性，但导致 TOF 比 Ru-Cu/10%WO ₃增加十倍-ZrO ₂，到大约 0.11 s ^-1。Cu 添加到 Ru 导致位点阻塞，对调节对 CO 裂解的选择性和抑制 CC 裂解具有有益影响。