文献类型：期刊文献

英文题名：Low-condensed lignin and high-purity cellulose production from poplar by synergistic deep eutectic solvent-hydrogenolysis pretreatment

作者：Han, Shuangmei[1] Wang, Ruizhen[1] Wang, Kui[1,2] Jiang, Jianchun[1,2] Xu, Junming[1,2]

第一作者：韩善明

通信作者：Xu, JM[1];Xu, JM[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China

年份：2022

卷号：363

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20223712719071);Scopus(收录号：2-s2.0-85137552480);WOS:【SCI-EXPANDED(收录号:WOS:000862259400006)】；

基金：Acknowledgments The authors would like to thank the financial support provided by the National Natural Science Foundation of China (32171713) .

语种：英文

外文关键词：Ternary DES; Lignin; Less-condensed structure; Catalytic hydrogenolysis; High -purity cellulose

摘要：This paper presented a green and environmentally friendly method to obtain lignin with a structure similar to milled wood lignin (MWL) and high-purity cellulose from biomass in a two-step process. The first step, maleic acid (MA), choline chloride (ChCl), and ethylene glycol (EG) ternary deep eutectic solvent (DES) pretreatment was performed to obtain lignin with less-condensed structure. The results showed that the obtained lignin had similar properties to MWL under the condition (MA/ChCl/EG = 1:5:15, 80?, 10 h). The DES recovered still had good cycle performance. The second step, the cellulose-rich residue was hydrogenated with isopropanol-water solvent and Raney nickel to obtain high-purity cellulose. The results showed that the purity of cellulose obtained by catalytic hydrogenolysis was > 94%. The glucose yield after enzymatic hydrolysis was 243.72 mg/g, which was 14.7 times higher than the untreated poplar. Overall, this work was of great significance for the effective separation of biomass.