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Bond cleavage of lignin model compounds into aromatic monomers using supported metal catalysts in supercritical water.

ABSTRACT: More efficient use of lignin carbon is necessary for carbon-efficient utilization of lignocellulosic biomass. Conversion of lignin into valuable aromatic compounds requires the cleavage of C-O ether bonds and C-C bonds between lignin monomer units. The catalytic cleavage of C-O bonds is still challenging, and cleavage of C-C bonds is even more difficult. Here, we report cleavage of the aromatic C-O bonds in lignin model compounds using supported metal catalysts in supercritical water without adding hydrogen gas and without causing hydrogenation of the aromatic rings. The cleavage of the C-C bond in bibenzyl was also achieved with Rh/C as a catalyst. Use of this technique may greatly facilitate the conversion of lignin into valuable aromatic compounds.

SUBMITTER: Yamaguchi A

PROVIDER: S-EPMC5384005 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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Bond cleavage of lignin model compounds into aromatic monomers using supported metal catalysts in supercritical water.

Yamaguchi Aritomo A Mimura Naoki N Shirai Masayuki M Sato Osamu O

Scientific reports 20170407

More efficient use of lignin carbon is necessary for carbon-efficient utilization of lignocellulosic biomass. Conversion of lignin into valuable aromatic compounds requires the cleavage of C-O ether bonds and C-C bonds between lignin monomer units. The catalytic cleavage of C-O bonds is still challenging, and cleavage of C-C bonds is even more difficult. Here, we report cleavage of the aromatic C-O bonds in lignin model compounds using supported metal catalysts in supercritical water without add ...[more]

PMID: 28387304

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