2022 Annual Meeting
Understanding the Impact of Lignin-Derived Hydrogen Bond Donor on the Solvent Properties of Deep Eutectic Solvents
Jialong Lin, Yunxuan Wang, Chang Geun Yoo
Department of Chemical Engineering, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA
Abstract
Various deep eutectic solvents (DESs) have been investigated to accomplish a sustainable bio-refinery process. In particular, lignin-derived DES could facilitate biomass fractionation and conversion as a processing solvent. However, despite many results with the DES in biomass pretreatment and conversion, the characteristics of these DESs were not well-studied. In this study, lignin-derived phenolic monomers, including several hydroxycinnamic acids, dihydroxybenzenes, and methoxybenzenes, were selected as the hydrogen-bond donor (HBD) to form DES with choline chloride as the hydrogen-bond acceptor (HBA) at different molar ratios. Effects of the HBD structural properties like the contents of hydroxyl/methoxy groups, the position of functional groups, and the length of the aliphatic chains on the DES formation and characteristics were studied. The results of this study would be important for future biorefinery solvent development and applications.