Valuable fuels and chemicals production from biomass with high yields is always a big challenge in the energy utilization field. Herein, a two-step process for the catalytic conversion of lignin was proposed to form the fuels. In the first step, the depolymerization of lignin occurred efficiently via the hydrogenolysis reaction, resulting in 19.2% aromatic monomers under the catalysis of Pd/C and CrCl₃. The catalysts exhibited a synergistic effect on the cleavage of β-O-4 bonds and the hydrogenation procedure, which prevented the condensation of intermediate products remarkably. Afterwards, the aromatic monomers were extracted out with octane solvent successfully (extraction degree 89.7%) and then used as a substrate in a second hydrodeoxygenation (HDO) step. Product mixture composed of 26.5% hydrocarbons (increased from 5.5%) and 49.7% alkylphenols (increased from 42.9%) were obtained after the HDO upgrading, which exhibited high potential to be used as fuels. This two-step approach is very promising to be a practical chemical engineering process for the fuel production from lignin.

在能源利用领域，以高产率从生物质中有价值的燃料和化学产品生产一直是一个巨大的挑战。在此，提出了用于木质素的催化转化的两步法以形成燃料。第一步，通过氢解反应有效地进行了木质素的解聚反应，在Pd / C和CrCl ₃的催化下生成了19.2％的芳香族单体。。该催化剂对β-O-4键的断裂和加氢过程具有协同作用，从而显着防止了中间产物的缩合。然后，用辛烷溶剂成功地萃取出芳香族单体（萃取度为89.7％），然后将其用作第二次加氢脱氧（HDO）步骤的底物。HDO升级后，获得了由26.5％的碳氢化合物（由5.5％升高）和49.7％的烷基酚（由42.9％升高）组成的产物混合物，具有很高的潜力用作燃料。这种两步法非常有希望成为从木质素生产燃料的实用化学工程方法。