Lignin is one of the most promising feedstocks for renewable aromatics production. Conversion of such feedstock into aromatics can be attained through catalytic hydrogenolysis. In this work, Ni_xFe_y/TiN bimetallic catalysts were evaluated in the hydrogenolysis of both: (i) benzyl phenyl ether (BPE) as a model compound for lignin and (ii) real organosolv lignin feedstock under low temperature (150 °C) and low H₂ pressure (12 bar). All bimetallic catalysts exhibited superior performance over single-component materials and were shown to compose of uniformly/highly dispersed and intimately mixed Ni and Fe nanoparticles. Among bimetallic materials, Ni₅Fe₂/TiN possesses the highest activity in BPE hydrogenolysis, which is comparable to that of a 5% Pd/C commercial catalyst while showing significantly higher aromatic selectivity. Ni₅Fe₂/TiN catalyst also outperformed Pd/C in hydrogenolysis of organosolv lignin, shown by its higher oil yield, greater content of phenolic monomers, and lower content of dimers. This material exhibited good stability in BPE conversion with no noticeable deactivation over 5 recycling cycles. XANES analysis suggests the electron transfer from Ni to Fe, which explains the superior activity observed with Ni₅Fe₂/TiN.

木质素是最有前途的可再生芳烃生产原料之一。可以通过催化氢解将此类原料转化为芳烃。在这项工作中，Ni _x Fe _y /TiN 双金属催化剂在以下两者的氢解中进行了评估：(i) 苄基苯基醚 (BPE) 作为木质素的模型化合物和 (ii) 低温（150 °C）下的真实有机溶剂木质素原料) 和低 H ₂压力 (12 bar)。所有双金属催化剂均表现出优于单组分材料的性能，并显示由均匀/高度分散且紧密混合的 Ni 和 Fe 纳米粒子组成。双金属材料中，Ni ₅ Fe ₂/TiN 在 BPE 氢解中具有最高的活性，可与 5% Pd/C 商业催化剂相媲美，同时显示出显着更高的芳烃选择性。Ni ₅ Fe ₂ /TiN 催化剂在有机溶剂型木质素的氢解中也优于 Pd/C，表现为更高的油收率、更高的酚类单体含量和更低的二聚体含量。这种材料在 BPE 转化中表现出良好的稳定性，在 5 个循环周期内没有明显的失活。XANES 分析表明电子从 Ni 转移到 Fe，这解释了用 Ni ₅ Fe ₂ /TiN 观察到的优异活性。