Towards a molecular understanding of cellulose dissolution in ionic liquids: anion/cation effect, synergistic mechanism and physicochemical aspects,Chemical Science

当前位置： X-MOL 学术 › Chem. Sci. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Towards a molecular understanding of cellulose dissolution in ionic liquids: anion/cation effect, synergistic mechanism and physicochemical aspects
Chemical Science ( IF 7.6 ) Pub Date : 2018-03-26 00:00:00 , DOI: 10.1039/c7sc05392d
Yao Li ₁ , Jianji Wang ₂ , Xiaomin Liu ₁ , Suojiang Zhang ₁

Affiliation

Cellulose is one of the most abundant bio-renewable materials on the earth and its conversion to biofuels provides an appealing way to satisfy the increasing global energy demand. However, before carrying out the process of enzymolysis to glucose or polysaccharides, cellulose needs to be pretreated to overcome its recalcitrance. In recent years, a variety of ionic liquids (ILs) have been found to be effective solvents for cellulose, providing a new, feasible pretreatment strategy. A lot of experimental and computational studies have been carried out to investigate the dissolution mechanism. However, many details are not fully understood, which highlights the necessity to overview the current knowledge of cellulose dissolution and identify the research trend in the future. This perspective summarizes the mechanistic studies and microscopic insights of cellulose dissolution in ILs. Recent investigations of the synergistic effect of cations/anions and the distinctive structural changes of cellulose microfibril in ILs are also reviewed. Besides, understanding the factors controlling the dissolution process, such as the structure of anions/cations, viscosity of ILs, pretreatment temperature, heating rate, etc., has been discussed from a structural and physicochemical viewpoint. At the end, the existing problems are discussed and future prospects are given. We hope this article would be helpful for deeper understanding of the cellulose dissolution process in ILs and the rational design of more efficient and recyclable ILs.

中文翻译：

从分子角度理解纤维素在离子液体中的溶解：阴离子/阳离子效应、协同机制和物理化学方面

纤维素是地球上最丰富的生物可再生材料之一，将其转化为生物燃料为满足日益增长的全球能源需求提供了一种有吸引力的方法。然而，在进行酶解为葡萄糖或多糖的过程之前，需要对纤维素进行预处理以克服其顽抗性。近年来，多种离子液体（IL）被发现是纤维素的有效溶剂，提供了一种新的、可行的预处理策略。已经进行了大量的实验和计算研究来研究溶解机制。然而，许多细节尚未完全了解，这凸显了有必要概述当前纤维素溶解的知识并确定未来的研究趋势。这一观点总结了离子液体中纤维素溶解的机制研究和微观见解。还回顾了最近对离子液体中阳离子/阴离子的协同效应和纤维素微纤丝的独特结构变化的研究。此外，还从结构和物理化学的角度讨论了控制溶解过程的因素，如阴离子/阳离子的结构、离子液体的粘度、预处理温度、加热速率等。最后对存在的问题进行了讨论，并对未来进行了展望。我们希望本文有助于更深入地了解离子液体中的纤维素溶解过程以及更高效和可回收的离子液体的合理设计。

更新日期：2018-03-26

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11