Upgrading renewable biomass into high-valued biofuels and chemicals is highly desirable, however, still remains a challenging task. Hydrodeoxygenation (HDO) is regarded as an effective and promising approach for biorefinery. Herein, the bipyridine ligand with strong metal anchoring capacity is used as a monomer to fabricate porous organic framework (POF) materials. The bipyridine-based POF (named as N-BB) serves as an HDO catalyst support to stabilize PdAg bimetallic nanoparticles. Due to the abundant porous structure of the N-BB support, good dispersity of PdAg nanoparticles, large specific surface area, and synergetic effect of Pd and Ag, the prepared Pd₉Ag₁/N-BB catalyst exhibits high activity and stability for the HDO of lignin-derived molecules. In addition, the kinetic studies of the hydrogenation of vanillin over Pd₉Ag₁/N-BB are also carried out, providing strong evidence for the excellent performance of the Pd₉Ag₁/N-BB catalyst. The Pd₉Ag₁/N-BB displays a great application prospect in catalytic HDO of lignin-derived compounds.

中文翻译：

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负载在双吡啶基多孔有机聚合物上的 PdAg 纳米颗粒：一种有效的双金属催化剂，用于香兰素的加氢脱氧

将可再生生物质升级为高价值的生物燃料和化学品是非常可取的，但仍然是一项具有挑战性的任务。加氢脱氧（HDO）被认为是一种有效且有前景的生物精炼方法。在此，具有强金属锚定能力的联吡啶配体被用作制备多孔有机骨架（POF）材料的单体。基于联吡啶的 POF（命名为 N-BB）用作 HDO 催化剂载体以稳定 PdAg 双金属纳米粒子。由于 N-BB 载体具有丰富的多孔结构、PdAg 纳米粒子的良好分散性、较大的比表面积以及 Pd 和 Ag 的协同作用，制备的 Pd ₉ Ag ₁/N-BB 催化剂对木质素衍生分子的 HDO 表现出高活性和稳定性。此外，还进行了香草醛在Pd ₉ Ag ₁ /N-BB 上加氢的动力学研究，为Pd ₉ Ag ₁ /N-BB 催化剂的优异性能提供了有力的证据。Pd ₉ Ag ₁ /N-BB在木质素衍生化合物的催化HDO中显示出巨大的应用前景。