Lignin Compounds to Monoaromatics: Selective ...
Document type :
Article dans une revue scientifique: Article original
DOI :
Permalink :
Title :
Lignin Compounds to Monoaromatics: Selective Cleavage of C−O Bonds over a Brominated Ruthenium Catalyst
Author(s) :
Wu, Dan [Auteur]
Wang, Qiyan [Auteur]
Safonova, Olga V. [Auteur]
Peron, Deizi-Vanessa [Auteur]
Unité de Catalyse et de Chimie du Solide (UCCS) - UMR 8181
Zhou, Wenjuan [Auteur]
Yan, Zhen [Auteur]
Marinova, Maya [Auteur]
Institut Chevreul - FR2638
Khodakov, Andrei [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Ordomsky, Vitaly [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Wang, Qiyan [Auteur]
Safonova, Olga V. [Auteur]
Peron, Deizi-Vanessa [Auteur]
Unité de Catalyse et de Chimie du Solide (UCCS) - UMR 8181
Zhou, Wenjuan [Auteur]
Yan, Zhen [Auteur]
Marinova, Maya [Auteur]
Institut Chevreul - FR2638
Khodakov, Andrei [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Ordomsky, Vitaly [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Journal title :
Angewandte Chemie International Edition
Abbreviated title :
Angew. Chem. Int. Ed.
Volume number :
60
Pages :
12513-12523
Publication date :
2021-03-17
ISSN :
1433-7851, 1521-3773
HAL domain(s) :
Chimie/Catalyse
English abstract : [en]
The cleavage of C−O linkages in aryl ethers in biomass-derived lignin compounds without hydrogenation of the aromatic rings is a major challenge for the production of sustainable mono-aromatics. Conventional strategies ...
Show more >The cleavage of C−O linkages in aryl ethers in biomass-derived lignin compounds without hydrogenation of the aromatic rings is a major challenge for the production of sustainable mono-aromatics. Conventional strategies over the heterogeneous metal catalysts require the addition of homogeneous base additives causing environmental problems. Herein, we propose a heterogeneous Ru/C catalyst modified by Br atoms for the selective direct cleavage of C−O bonds in diphenyl ether without hydrogenation of aromatic rings reaching the yield of benzene and phenol as high as 90.3 % and increased selectivity to mono-aromatics (97.3 vs. 46.2 % for initial Ru) during depolymerization of lignin. Characterization of the catalyst indicates selective poisoning by Br of terrace sites over Ru nanoparticles, which are active in the hydrogenation of aromatic rings, while the defect sites on the edges and corners remain available and provide higher intrinsic activity in the C−O bond cleavage.Show less >
Show more >The cleavage of C−O linkages in aryl ethers in biomass-derived lignin compounds without hydrogenation of the aromatic rings is a major challenge for the production of sustainable mono-aromatics. Conventional strategies over the heterogeneous metal catalysts require the addition of homogeneous base additives causing environmental problems. Herein, we propose a heterogeneous Ru/C catalyst modified by Br atoms for the selective direct cleavage of C−O bonds in diphenyl ether without hydrogenation of aromatic rings reaching the yield of benzene and phenol as high as 90.3 % and increased selectivity to mono-aromatics (97.3 vs. 46.2 % for initial Ru) during depolymerization of lignin. Characterization of the catalyst indicates selective poisoning by Br of terrace sites over Ru nanoparticles, which are active in the hydrogenation of aromatic rings, while the defect sites on the edges and corners remain available and provide higher intrinsic activity in the C−O bond cleavage.Show less >
Language :
Anglais
Audience :
Non spécifiée
Popular science :
Non
Administrative institution(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)
Submission date :
2022-03-24T09:02:21Z