The developing of pretreatment method to break the biomass barrier of lignocellulosic is a challenging task for achieve high value utilization. A fast microwave-assisted choline chloride/1,2-propanediol/methyl isobutyl ketone biphasic system was constructed for pretreating Eucalyptus to the production of furfural and cellulose-rich residues and the extraction of lignin. Results showed that the combination of AlCl₃·6H₂O and HCl had the best catalytic ability for furfural production among the examined catalysts. Under the optimal conditions (140 °C, 15 min, 0.075 M AlCl₃·6H₂O, 0.05 M HCl), the furfural yield of 55.4 %, the glucose yield of 90.3 % and the delignification rate of 92.4 % could be achieved. Moreover, the extracted lignin samples with a low polydispersity (1.55–1.73) and molecular weight (1380–2040 g/mol) are promising to act as precursor for the value-add products processing. These findings demonstrated an ultrafast pretreatment process with excellent results in biomass fractionation and comprehensive utilization of biomass components.

开发打破木质纤维素生物质壁垒的预处理方法是实现高价值利用的一项具有挑战性的任务。构建了一种快速微波辅助氯化胆碱/1,2-丙二醇/甲基异丁基酮双相系统，用于预处理桉树以生产糠醛和富含纤维素的残留物以及提取木质素。结果表明，在所测试的催化剂中，AlCl ₃ ·6H ₂ O和HCl的组合对糠醛生产具有最好的催化能力。在最佳条件下（140 °C，15 min，0.075 M AlCl ₃ ·6H ₂O, 0.05 M HCl),糠醛收率为55.4%,葡萄糖收率为90.3%,脱木素率为92.4%。此外，提取的木质素样品具有低多分散性 (1.55–1.73) 和分子量 (1380–2040 g/mol)，有望作为增值产品加工的前体。这些发现证明了超快预处理过程在生物质分馏和生物质组分的综合利用方面具有优异的结果。