Lignin, which represents the most abundant renewable aromatic biomass resource on the earth, is promising as an alternative for the production of chemicals. We presented a modified method that provides the hydrogen source in the reaction with a mixed solvent of alcohol, acid and water, replacing the original method that directly provides a hydrogen source with external hydrogen. In addition, a new cobalt supported on nitrogen doped carbon catalyst preparation method (one-pot) was presented. We proposed one-step method in which corn stover lignin is converted to target monomers over Co/AC-N_one-pot catalyst and mixed solvent. The role of the alcohol to acid and water mixed solvent not only extract lignin fragments from the matrix but also provide the hydrogen source. Cobalt which has electronic interaction with the nitrogen reformed alcohols to obtain hydrogen and stabilized lignin intermediates during the reaction by hydrogenation of active bonds. Different kinds of nitrogen including pyridinic and pyrrolic nitrogen functional groups plays a critical role in stabilizing Co. Nearly complete delignification (91%) and high yield of target monomers (23.8%) can be obtained under the conditions (5wt% Co/Ac-N_one-pot, 10:1:1mixture solvent consist of isopropanol/water/ formic acid, 235 °C, 200 min, 0.1 MPa N₂), and the selectivity of target monomers was 85%. Circulation experiment of catalyst was performed directly without any operation of the residue, and it could maintain 90% activity in the first four cycles.

木质素是地球上最丰富的可再生芳香族生物质资源，有望作为化学品生产的替代品。我们提出了一种改进的方法，将反应中的氢源提供给醇、酸和水的混合溶剂，取代了直接用外部氢提供氢源的原始方法。此外，还提出了一种新型的钴负载氮掺杂碳催化剂制备方法（一锅法）。我们提出了一步法，通过 Co/AC-N_one-pot 催化剂和混合溶剂将玉米秸秆木质素转化为目标单体。醇对酸水混合溶剂的作用不仅可以从基质中提取木质素碎片，还可以提供氢源。钴与氮重整醇具有电子相互作用，在反应过程中通过活性键的氢化获得氢和稳定的木质素中间体。不同种类的氮，包括吡啶和吡咯氮官能团在稳定 Co. 中起着关键作用。 在 (5wt% Co/Ac-N_one - 锅，10:1:1 混合溶剂由异丙醇/水/甲酸组成，235 °C，200 分钟，0.1 MPa N₂ )，目标单体的选择性为85%。催化剂循环实验直接进行，对残渣不做任何操作，前四次循环可保持90%的活性。