Synthesis of Functional Ionic Liquids and their Application for the Direct Saccharification of Cellulose

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hiroyuki Tominaga¹  Eika W. Qian¹  Ryosuke Isoe¹  Tung L. Chen¹ 

[1] Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology

关键词: Ionic Liquid;    Cellulose Hydrolysis;    Microwave-Assisted Synthesis;    First-Principles Calculation;   

DOI  :  10.1252/jcej.15we060

来源: Maruzen Company Ltd

【 摘 要 】

References(33)1-Allyl-pyridinium type ionic liquids with acidic anions were synthesized using a microwave-assisted method to develop a one-pot method for the direct saccharification of cellulose. A monosaccharide yield of ca. 52.4% was obtained by processing the cellulose at 100°C for 1 h using a novel ionic liquid (i.e., 1-allyl-pyridinium methanesulfonate) without an additional catalyst. The first principles molecular dynamics simulations and investigations of the electronic structures of ionic liquids and cellulose revealed the mechanism of the direct saccharification of cellulose. An anion with –SO3− attracts H+ dissociated from H2O, which causes the temporary formation of the –SO3H group. Next, the –SO3H functions as an acid catalyst to hydrolyze the cellulose. In saccharification, appropriate cations, such as the 1-allyl-pyridinium cation, also play important roles. The cation interacts with the cellulose to weaken the primary chain bonds of the cellulose, which enables the decomposition of cellulose.

【 授权许可】

Unknown