木质素在低共熔溶剂中降解的研究进展

Research Progress of Lignin Degradation in Deep Eutectic Solvents

关键词:  木质素  降解  DES  回收与利用

Key Words:lignin  degradation  DES  recycling and utilization

摘要:木质素是自然界储量仅次于纤维素的天然高分子聚合物，其结构是由苯丙烷单体通过C—C、C—O—C等化学键连接起来的芳香族大分子。降解是实现木质素高值转化的途径之一，其中低共熔溶剂（DES）加热降解木质素是一种优良的绿色降解方法。本文介绍了DES结构组成与回收利用、DES降解木质素的机理、木质素在DES中降解的研究进展，并给出了DES在降解木质素方面的建议及展望。

Abstract:Lignin is a kind of natural high molecular polymer whose reserves are second only to cellulose in nature. Its structure is an aromatic macromolecule connected by phenylpropane monomer through C—C， C—O—C and other chemical bonds. Degradation is one of the ways to realize the high value conversion of lignin. The heating degradation of lignin in deep eutectic solvent （DES） can be used as an excellent green degradation method. In this paper， the structure and recycling of DES， the mechanism of lignin degradation by DES， and the recent research progress of lignin degradation in DES were introduced. The suggestions and prospects of DES in lignin degradation were also put forward.