文献类型：期刊文献

英文题名：Directional and integrated conversion of whole components in biomass for levulinates and phenolics with biphasic system

作者：Feng, Junfeng[1,2,3] Tong, Le[1] Ma, Changyue[1] Xu, Yangyang[1] Jiang, Jianchun[1,4] Yang, Zhongzhi[4,5] Pan, Hui[1,2]

第一作者：Feng, Junfeng

通信作者：Pan, H[1]

机构：[1]Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Jiangsu, Peoples R China;[3]Nanjing Forestry Univ, Jiangsu Prov Key Lab Chem & Utilizat Agroforest B, Nanjing 210042, Jiangsu, Peoples R China;[4]Chinese Acad Forestry, Natl Engn Lab Biomass Chem Utilizat, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[5]Univ Wisconsin, Dept Biol Syst Engn, Madison, WI 53716 USA

年份：2020

卷号：315

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20202908952829);Scopus(收录号：2-s2.0-85087951384);WOS:【SCI-EXPANDED(收录号:WOS:000560718600011)】；

基金：The authors gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (31530010) and Research Grant of Jiangsu Province Biomass Energy and Materials Laboratory (JSBEM201903) for this investigation. The authors also thank the Nanjing Forestry University scientific research start-up funds (GXL2018037) for this investigation.

语种：英文

外文关键词：Integrated liquefaction; Biomass; Levulinates; Phenolics; Biphasic system

摘要：Integrated conversion and stepwise extraction of whole components in biomass with biphasic system are introduced for producing chemicals: levulinates and phenolics. When methanol/dimethoxymethane as biphasic solvent, 46.51% methyl levulinate and 18.78% phenolics were obtained with a conversion of 80.59 wt% per 4 g rice straw under the mild reaction conditions. Levulinates were collected with a 87.5 wt% high purity of methyl levulinate with stepwise precipitation and extraction from the cellulose and hemicellulose. The results of acid value, freezing point, induction period, kinematic viscosity, and flash point supposed that the extracted methyl levulinate could meet the requirements of fuel additives. Depolymerized lignin was consisted of many low molecular phenolics. These results illustrated that the biphasic system can promote the conversion of cellulose and hemicellulose to the same product methyl levulinate through different intermediate transition compounds, and the catalyst can contribute to directly cleave the glycosidic bonds, beta-O-4, and 4-O-5 with adequate protons.