Lignin Compounds to Monoaromatics: Selective ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
Lignin Compounds to Monoaromatics: Selective Cleavage of C−O Bonds over a Brominated Ruthenium Catalyst
Auteur(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
Titre de la revue :
Angewandte Chemie International Edition
Nom court de la revue :
Angew. Chem. Int. Ed.
Numéro :
60
Pagination :
12513-12523
Date de publication :
2021-03-17
ISSN :
1433-7851, 1521-3773
Discipline(s) HAL :
Chimie/Catalyse
Résumé en anglais : [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 ...
Lire la suite >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.Lire moins >
Lire la suite >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.Lire moins >
Langue :
Anglais
Audience :
Non spécifiée
Vulgarisation :
Non
Établissement(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Équipe(s) de recherche :
Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)
Date de dépôt :
2022-03-24T09:02:21Z