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Mechanistic insights into the photocatalytic valorization of lignin models via C−O/C−C cleavage or C−C/C−N coupling

Zhang, Q and Gupta, NK and Rose, M and Gu, X and Menezes, PW and Chen, Z (2023) Mechanistic insights into the photocatalytic valorization of lignin models via C−O/C−C cleavage or C−C/C−N coupling. In: Chem Catalysis, 3 (2).

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Official URL: https://doi.org/10.1016/j.checat.2022.11.009


Serving as an earth-abundant, aromatic structure-rich but underutilized lignocellulosic component, the effective conversion of lignin into high-value-added chemicals is considered a major countermeasure for an energy-efficient and low-carbon future. Encouraged by the unique reaction pattern induced by photo-generated charge carriers or reactive species, the environmentally benign and low-energy dissipative photocatalytic technology emerges as a marvelous strategy for lignin valorization and has received increasing attention and extensive research. By focusing on the mechanistic perspectives, this review provides a comprehensive summary of the state-of-the-art developments in (1) the photocatalytic depolymerization of lignin models by precisely breaking targeted C−O and/or C−C bonds to obtain aromatic monomers and (2) the upgradation of lignin-derived aromatics via C−C or C−N bonds coupling into high-value-added coupling compounds. We then present the opportunities for photocatalytic conversion of native lignin, as well as the future challenges for achieving a photocatalytic system with profitability and sustainability.

Item Type: Journal Article
Publication: Chem Catalysis
Publisher: Cell Press
Additional Information: The copyright for this article belongs to Cell Press.
Keywords: C−C/C−N coupling; C−O/C−C bond cleavage; lignin valorization; mechanism; photocatalysis; SDG7: Affordable and clean energy
Department/Centre: Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited: 15 Mar 2023 05:41
Last Modified: 15 Mar 2023 05:41
URI: https://eprints.iisc.ac.in/id/eprint/80979

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