Issue 2, 2023

Perspective on oligomeric products from lignin depolymerization: their generation, identification, and further valorization

Abstract

The present contribution emphasizes the formation of oligomeric products in various depolymerization approaches of lignin, namely reductive catalytic fractionation, oxidative catalytic fractionation, and pyrolysis. Three possible routes to form such oligomers in these depolymerization processes are summarized and compared from various studies conducted on model compounds. Next, the main identification techniques for characterizing oligomeric products are highlighted. Particular focus is given to 2D-HSQC-NMR, GPC, Maldi-TOF-MS and FT-ICR-MS, which represent the state-of-art characterization of lignin. Special attention was paid to the transferability of these techniques for depolymerized oligomeric lignin. Finally, both the existing and expected potential lignin valorization routes are discussed for these oligomers, and technical hurdles and recommendations are provided in an attempt to catalyze the development of new discoveries and enabling technologies.

Keywords: Lignin oligomer; Reductive and oxidative depolymerization; Biofuels; Characterization techniques; Lignin valorization.

Graphical abstract: Perspective on oligomeric products from lignin depolymerization: their generation, identification, and further valorization

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Article information

Article type
Review Article
Submitted
16 dek 2022
Accepted
09 fev 2023
First published
10 mar 2023
This article is Open Access
Creative Commons BY license

Ind. Chem. Mater., 2023,1, 207-223

Perspective on oligomeric products from lignin depolymerization: their generation, identification, and further valorization

Y. Han, B. A. Simmons and S. Singh, Ind. Chem. Mater., 2023, 1, 207 DOI: 10.1039/D2IM00059H

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