Abstract
Conversion of lignocellulose into useful chemicals is an important research topic in the area of biomass utilization. In this study, microcrystalline cellulose (MC) was dissolved in a mixed-solvent system containing the ionic liquid (IL) 1-allyl-3-methylimidazolium chloride ([Amim]Cl) and N-methyl-pyrrolidone (NMP), and the cellulose was directly converted into methyl glucoside (MG) by acid-catalyzed methanolysis aided by microwave irradiation (μWIr). Under moderate reaction temperature and pressure, and in the presence of acetyl chloride/methanol (in situ formed HCl) as an acid catalyst, MG was obtained in a 42% yield. In contrast, in the absence of either IL or μWIr, the MG yield was only 5 or 21%, respectively. Both μWIr and the dissolution of cellulose in IL were quite effective for the conversion of cellulose into MG.
Funding source: Japan Society for the Promotion of Science
Award Identifier / Grant number: JP16H04957
Funding statement: Part of this work was supported by JSPS, Funder Id: 10.13039/501100001691, KAKENHI Grant Number JP16H04957.
Acknowledgments
The authors are very grateful to Dr. Suzuki at Forest Products Research Institute, Toyama Prefectural Agricultural, Forestry and Fisheries Research Center in Japan, for the GC-MC analysis of the reaction products.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Employment or leadership: None declared.
Honorarium: None declared.
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