Zhu Shanhui, Guo Jing, Wang Xun, Wang Jianguo, Fan Weibin
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P.R. China.
University of Chinese Academy of Sciences, Beijing, 100039, P.R. China.
ChemSusChem. 2017 Jun 22;10(12):2547-2559. doi: 10.1002/cssc.201700597. Epub 2017 Jun 8.
In the catalytic conversion of lignocellulose to valuable products, the first entry point is to break down these biopolymers to sugar units or aromatic monomers, which is conventionally achieved by hydrolysis in water medium. Recent years have seen tremendous progress in the alcoholysis process, which has remarkable advantages, such as the avoidance of treating waste water, suppression of humins or chars, and enhancement of reaction rate and product yield. Advances have been focused on the alcoholysis of cellulose, hemicellulose, and lignin to alkyl glucosides, xylosides, and aromatic monomers, respectively. Alcoholysis of the platform molecule furfuryl alcohol (FAL) to alkyl levulinate (AL) and integrated alcoholysis of cellulose and furfural into AL are also summarized. This Minireview highlights the comparisons between alcoholysis and hydrolysis, the reaction mechanism of alcoholysis, and future challenges for industrial applications.
在将木质纤维素催化转化为有价值产品的过程中，首要切入点是将这些生物聚合物分解为糖单元或芳香族单体，传统上这是通过在水介质中水解来实现的。近年来，醇解过程取得了巨大进展，该过程具有显著优势，如避免处理废水、抑制腐殖质或焦炭的产生，以及提高反应速率和产物收率。研究进展主要集中在纤维素、半纤维素和木质素分别醇解为烷基葡糖苷、木糖苷和芳香族单体。还总结了平台分子糠醇（FAL）醇解为乙酰丙酸酯（AL）以及纤维素和糠醛集成醇解为AL的过程。本综述重点介绍了醇解和水解之间的比较、醇解的反应机理以及工业应用面临的未来挑战。
