文献类型：期刊文献

英文题名：Liquefaction of bamboo biomass and production of three fractions containing aromatic compounds

作者：Ma, Yan[1,2] Tan, Weihong[1,2] Wang, Jingxin[2] Xu, Junming[1,3] Wang, Kui[1] Jiang, Jianchun[1]

第一作者：Ma, Yan

通信作者：Tan, W.

机构：[1] Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Key and Open Lab. of Forest Chemical Engineering, SFA, National Engineering Laboratory for Chemical Utilization of Biomass, Key Laboratory of Biomass Energy and Materials of Jiangsu Province, Nanjing, 210042, China; [2] Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV, 26506, United States; [3] Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China

年份：2020

卷号：5

期号：2

起止页码：114-123

外文期刊名：Journal of Bioresources and Bioproducts

收录：EI(收录号：20220411530375);Scopus(收录号：2-s2.0-85090915381)

基金：We gratefully acknowledge the financial supports of this study by State Key Program of National Natural Science of China (No. 31530010 , No. 31600590 ). Yan Ma (No. 201603270034) would also like to appreciate the fellowship from China Scholarship Council (CSC) to support her study at West Virginia University.

语种：英文

外文关键词：Quantum theory - Molecular weight distribution - Aromatization - Gas chromatography - Gel permeation chromatography - Phenols - Monomers

摘要：Depolymerization of lignin to produce value-added aromatic monomers has attracted increasing attention since these monomers can be used as phenol replacement in production of phenolic resins. Here a one-pot depolymerization of bamboo lignin was investigated to obtain aromatic platforms with low molecular weight using acidic catalyst and ethanol. Three fractions (1#, 2#, and 3#) containing different molecular weight distributions of aromatic compounds could be efficiently extracted using water-organic solvent system via a stepwise fractionation process by gradual removal of solvent. The fractions distribution was found to be primarily dependent on the reaction temperature and time. When the temperature was increased from 160 °C to 200 °C, the yield of fractions containing aromatic products increased significantly from 19.1 wt% to 27 wt%, the same change trend was found by changing the time, and the yield of aromatic products increased from 22.4% to 26.7% with an increase of time from 10 min to 30 min. The bioproducts were characterized by using gas chromatography/mass spectrometry (GC–MS), gel permeation chromatography (GPC) and two-dimensional heteronuclear single-quantum coherence (2D HSQC NMR). As evidenced by GC–MS spectra, the three fractions were mainly comprised of phenolic derivatives, and the relative contents of phenolic compounds took up about 80% of the total area of each fraction. With the similar physiochemical properties of the fractions, aromatic platforms could provide a new paradigm of bamboo lignin utilization for renewable energy and value-added biochemicals. ? 2020