Investigating (Pseudo)-Heterogeneous Pd-Catalysts for Kraft Lignin Depolymerization under Mild Aqueous Basic Conditions
| Autor: | Laurent Djakovitch, Pascal Fongarland, Yu Xu, Franck Rataboul, Laurence Burel, Cyril Aymonier, Régis Philippe, Firat Goc, Guillaume Aubert, Dolorès Bourbiaux |
|---|---|
| Přispěvatelé: | Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), IRCELYON-Microscopie (MICROSCOPIE), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Catalyse, Polymérisation, Procédés et Matériaux (CP2M), Université de Lyon-Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), IRCELYON-C'Durable (CDURABLE), ANR-17-CE07-0027,NANOTRAP,Nouveau concept intégré pour la conversion de la lignine en produits chimiques utilisant des nanoparticules de palladium confinées(2017) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Lignocellulosic biomass
lignin TP1-1185 metallic nanoparticles 010402 general chemistry Heterogeneous catalysis 01 natural sciences 7. Clean energy complex mixtures Catalysis chemistry.chemical_compound Vanillic acid Lignin Organic chemistry Physical and Theoretical Chemistry QD1-999 010405 organic chemistry Depolymerization Vanillin Chemical technology oxidative depolymerization food and beverages [CHIM.CATA]Chemical Sciences/Catalysis palladium 0104 chemical sciences Chemistry [CHIM.POLY]Chemical Sciences/Polymers heterogeneous catalysis chemistry Energy source |
| Zdroj: | Catalysts, Vol 11, Iss 1311, p 1311 (2021) Catalysts Catalysts, MDPI, 2021, 11 (11), pp.1311. ⟨10.3390/catal11111311⟩ Volume 11 Issue 11 |
| ISSN: | 2073-4344 |
| DOI: | 10.3390/catal11111311⟩ |
| Popis: | Lignin is one of the main components of lignocellulosic biomass and corresponds to the first renewable source of aromatic compounds. It is obtained as a by-product in 100 million tons per year, mainly from the paper industry, from which only 2–3% is upgraded for chemistry purposes, with the rest being used as an energy source. The richness of the functional groups in lignin makes it an attractive precursor for a wide variety of aromatic compounds. With this aim, we investigated the Pd-catalyzed depolymerization of lignin under mild oxidizing conditions (air, 150 °C, and aqueous NaOH) producing oxygenated aromatic compounds, such as vanillin, vanillic acid, and acetovanillone. Palladium catalysts were implemented following different strategies, involving nanoparticles stabilized in water, and nanoparticles were supported on TiO2. Significant conversion of lignin was observed in all cases however, depending on the catalyst nature and the synthetic methods, differences were observed in terms of selectivity in aromatic monomers, mainly vanillin. All these aspects are discussed in detail in this report, which also provides new insights into the role that Pd-catalysts can play for the lignin depolymerization mechanism. |
| Databáze: | OpenAIRE |
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