Induction of lignin solubility for a series of polar ionic liquids by the addition of a small amount of water

被引：32
作者：
Akiba, Takashi [1 ,2 ]
Tsurumaki, Akiko [1 ,2 ]
Ohno, Hiroyuki [1 ,2 ]
机构：
[1] Tokyo Univ Agr & Technol, Dept Biotechnol, Koganei, Tokyo, Japan
[2] Tokyo Univ Agr & Technol, Grad Sch Engn, Funct Ionic Liquid Labs, 2-24-16 Nakacho, Koganei, Tokyo 1848588, Japan
来源：
GREEN CHEMISTRY | 2017年 / 19卷 / 09期
关键词：
INDUSTRIAL APPLICATIONS; DISSOLUTION; FRACTIONATION; BIOMASS; PRETREATMENT; CELLULOSE; WOOD;
D O I：
10.1039/c7gc00626h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Addition of a small amount of water was found to induce the lignin solubilizing ability in several polar ionic liquids which showed no lignin solubility in the absence of water. Similarly, addition of water was found to enhance lignin solubility in many polar ionic liquids. Though addition of water lowered the proton accepting ability of these ionic liquids, their proton donating ability was found to increase. The lignin dissolution by ionic liquids was newly found to be a function of both the proton accepting ability and proton donating ability of the ionic liquids. Water is a poor solvent for polysaccharides, and water addition has therefore been confirmed to be effective to improve the selective extraction yield of lignin from cedar powder under mild conditions.
引用
收藏
页码：2260 / 2265
页数：6
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