Journal
GREEN CHEMISTRY
Volume 22, Issue 1, Pages 33-38Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9gc03057c
Keywords
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Funding
- 2017 Royal Society International Collaboration Award [IC170044]
- National Natural Science Foundation of China [2177314, 21473109, 21690080, 21690083, 21878288]
- Science and Technology Program of Shaanxi Province [2016KJXX-26]
- Projects for the Academic Leaders and Academic Backbones, Shaanxi Normal University [16QNGG008]
- 111 project [B14041]
- DNL cooperation fund CAS [DNL180302]
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Simple rhodium terpyridine complexes were found to be suitable catalysts for the redox neutral cleavage of lignin in water. Apart from cleaving lignin model compounds into ketones and phenols, the catalytic system could also be applied to depolymerize dioxasolv lignin and lignocellulose, affording aromatic ketones as the major monomer products. The (hemi)cellulose components in the lignocellulose sample remain almost intact during lignin depolymerization, providing an example of a lignin-first process under mild conditions. Mechanistic studies suggest that the reaction proceeds via a rhodium catalyzed hydrogen autotransfer process.
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