Reaction behavior of milled wood lignin in an ionic liquid, 1-ethyl-3-methylimidazolium chloride

被引：13

作者：

Ogawa, Shintaro ^{[1
]}

Miyafuji, Hisashi ^{[1
]}

机构：

[1] Kyoto Prefectural Univ, Grad Sch Life & Environm Sci, Div Environm Sci, Sakyo Ku, Kyoto 6068522, Japan

来源：

JOURNAL OF WOOD SCIENCE | 2015年 / 61卷 / 03期

关键词：

Milled wood lignin; Ionic liquid; 1-ethyl-3-methylimidazolium chloride; Reaction behavior; Heating method; 1-H-3-METHYLIMIDAZOLIUM CHLORIDE; DEPOLYMERIZATION; PRETREATMENT; HYDROLYSIS; SOLVENT;

D O I：

10.1007/s10086-015-1461-3

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

We investigated the reaction behavior of milled wood lignin (MWL) obtained from Japanese cedar (Cryptomeria japonica) and Japanese beech (Fagus crenata) in an ionic liquid, 1-ethyl-3-methylimidazolium chloride ([C2mim][Cl]). This solvent can liquefy wood. The sample was treated with [C2mim][Cl] at 120 A degrees C using an oil bath or microwave irradiation. MWL easily dissolved in [C2mim][Cl]. Although solubilized, MWL was slightly depolymerized and it retained its high molecular weight after 96 h of treatment. Only small amounts of low molecular weight compounds such as vanillin, coniferylaldehyde, syringaldehyde and sinapylaldehyde were produced. As the treatment time was extended the chlorine from [C2mim][Cl] reacted with the MWL. These results indicate that MWL is stable in [C2mim][Cl] although limited depolymerization and modification by [C2mim][Cl] occurred.

引用

页码：285 / 291

页数：7

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