Catalytic carbon-carbon bond cleavage in lignin via manganese-zirconium-mediated autoxidation.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
29 Jan 2024
29 Jan 2024
Historique:
received:
29
04
2023
accepted:
09
01
2024
medline:
30
1
2024
pubmed:
30
1
2024
entrez:
29
1
2024
Statut:
epublish
Résumé
Efforts to produce aromatic monomers through catalytic lignin depolymerization have historically focused on aryl-ether bond cleavage. A large fraction of aromatic monomers in lignin, however, are linked by various carbon-carbon (C-C) bonds that are more challenging to cleave and limit the yields of aromatic monomers from lignin depolymerization. Here, we report a catalytic autoxidation method to cleave C-C bonds in lignin-derived dimers and oligomers from pine and poplar. The method uses manganese and zirconium salts as catalysts in acetic acid and produces aromatic carboxylic acids as primary products. The mixtures of the oxygenated monomers are efficiently converted to cis,cis-muconic acid in an engineered strain of Pseudomonas putida KT2440 that conducts aromatic O-demethylation reactions at the 4-position. This work demonstrates that autoxidation of lignin with Mn and Zr offers a catalytic strategy to increase the yield of valuable aromatic monomers from lignin.
Identifiants
pubmed: 38286984
doi: 10.1038/s41467-024-45038-z
pii: 10.1038/s41467-024-45038-z
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
862Subventions
Organisme : DOE | Office of Energy Efficiency & Renewable Energy | Bioenergy Technologies Office (BETO)
ID : DE-AC36-08GO28308
Organisme : DOE | SC | Biological and Environmental Research (BER)
ID : DE-AC36-08GO28308
Organisme : DOE | SC | Basic Energy Sciences (BES)
ID : DEFG02-05ER15690
Informations de copyright
© 2024. The Author(s).
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