文献类型：期刊文献

英文题名：Ultrafine grinding of poplar biomass: effect of particle morphology on the liquefaction of biomass for methyl glycosides and phenolics

作者：Zhai, Qiaolong[1,2,3,4] Li, Fanglin[1,2,3,4] Wang, Fei[1,2,3,4] Feng, Junfeng[1,2,3,4] Jiang, Jianchun[1,2,3,4] Xu, Junming[1,2,3,4,5]

第一作者：Zhai, Qiaolong

通信作者：Xu, JM[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[3]Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Jiangsu, Peoples R China;[4]SFA, Key & Open Lab Forest Chem Engn, Nanjing 210042, Jiangsu, Peoples R China;[5]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing, Jiangsu, Peoples R China

年份：2019

卷号：26

期号：6

起止页码：3685-3701

外文期刊名：CELLULOSE

收录：;EI(收录号：20191106619139);Scopus(收录号：2-s2.0-85062654257);WOS:【SCI-EXPANDED(收录号:WOS:000464849500005)】；

基金：The authors would like to thank the financial support provided by the National Natural Science Foundation of China (31530010) for this investigation.

语种：英文

外文关键词：Ultrafine powder; Pretreatment; Liquefaction; Glycoside; Phenolics

摘要：This paper shows that mechanical ultrafine grinding of poplar wood is an efficient pretreatment approach to enhance its reactivity during liquefaction. The microstructural features and chemical properties of biomass samples with different particle morphology were studied. In particular, we found that more cellulose and hemicellulose were exposed on the outer surface of the ultrafine powder (cellular scale of plant) and the crystal lattice structure of cellulose was significantly damaged. As a result, the degree of liquefaction reached 92.03% at 180 degrees C using UP feedstock, largely exceeding the value (53.35%) obtained at the same temperature using PS0.25. Two groups of value-added chemicals, namely phenolics and methyl glycosides were obtained during liquefaction. At 180 degrees C, the yields of methyl glycosides and phenolics obtained from an UP feedstock were, respectively, 28.45% and 10.17% higher than those obtained from the PS0.25. In addition, a high degree of liquefaction (> 90%) could be obtained at a temperature 40 degrees C lower than the one required by PS0.25, greatly reducing the occurrence of side reactions and improving the purity of target products. Overall, the mechanical fragmentation of biomass at cellular scale is a promising pretreatment method allowing high valorization of the entire biomass.