Thermal, photonic, and electrocatalysis in lignin depolymerization research

• Published in: RSC advances Vol. 13; no. 46; pp. 32627 - 3264
• Main Authors: Ziwei, Wang, Hao, Shu, Yizhen, Chen, Ben, Liu, Yaowei, Xu, Wanxia, Wang, Kaiyue, Wang, Mengheng, Lei, Li, Guo, Lei, Wang
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 06.11.2023; The Royal Society of Chemistry
• Subjects: Biomass; Biopolymers; Catalysts; Catalytic converters; Chemistry; Covalent bonds; Depolymerization; Lignin
• ISSN: 2046-2069; 2046-2069
• DOI: 10.1039/d3ra06880c

In order to realize a sustainable bio-based future, it is essential to fully harness the potential of biomass, including lignin - a readily available biopolymer that ranks second in abundance and serves as a renewable source of aromatics. While lignin has traditionally been used for lower-value applications like fuel and power generation, unlocking its higher-value potential through diverse conversion and upgrading techniques is of paramount importance. This review focuses on the catalytic conversion of lignin, with a specific emphasis on selective depolymerization, a process that not only supports economically and environmentally sustainable biorefineries but also aligns with Green Chemistry principles, mitigating adverse environmental impacts. Furthermore, we provide a comprehensive discussion of reaction pathways and mechanisms, including C-O and C-C bond cleavage, among different catalysts. Lastly, we analyze and briefly discuss the prospects of rational catalyst design in biomass valorization. Catalytic lignin depolymerization pathways for utilization.