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Revealing Structural Features of Lignin Macromolecules from Microwave-assisted Carboxylic Acid-based Deep Eutectic Solvent Pretreatment by Wei Liu; Chenxi Ning; Zhan Li; Xiaoyu Li; Hanmin Wang; Qingxi Hou is a Engineering article available to read on EtoBox.

What is Revealing Structural Features of Lignin Macromolecules from Microwave-assisted Carboxylic Acid-based Deep Eutectic Solvent Pretreatment about?

Lignin is the most abundant aromatic source in nature, whose efficient utilization has been recognized as a key challenge in biorefinery. Deep eutectic solvents (DES) exhibit excellent solubility for lignin, and are promising solvent for facilitating the lignin-first biorefinery and valorization of lignin. Herein, microwave-assisted carboxylic acid-based DES pretreatment was applied on corncob; the effects of the pretreatment on physical and chemical structures of lignin was investigated. The results showed that microwave-assisted DES pretreatment enhanced the deconstruction efficiency of corncob in terms of the high removal ratio and recovery yield of DES-lignin; Moreover, the resultant DES-lignin exhibited lower molecular weights and particle size than that from conventional DES pretreatment, and presented abundant phenolic OH groups. This study provide a highly efficient pretreatment approach for the agricultural residues and the sufficient understanding on structural and chemical characteristics of resultant DES-lignin will promote its subsequent conversion and application.

Who reads Revealing Structural Features of Lignin Macromolecules from Microwave-assisted Carboxylic Acid-based Deep Eutectic Solvent Pretreatment?

Author

Wei Liu; Chenxi Ning; Zhan Li; Xiaoyu Li; Hanmin Wang; Qingxi Hou

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)