Added-value chemicals from lignin oxidation
| Autor: | Carina Andreia Esteves da Costa, Alírio E. Rodrigues, Carlos A. Vega-Aguilar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
phenolic monomers
oxidation lignin Pharmaceutical Science Lignocellulosic biomass Review macromolecular substances engineering.material 010402 general chemistry complex mixtures 01 natural sciences Syringaldehyde Lignin Analytical Chemistry chemistry.chemical_compound QD241-441 Drug Discovery Oxidation Organic chemistry depolymerization Physical and Theoretical Chemistry Cellulose Phenolic monomers lignocellulosic biomass 010405 organic chemistry Depolymerization Vanillin Pulp (paper) fungi Organic Chemistry technology industry and agriculture food and beverages 0104 chemical sciences biorefineries Biorefineries Petrochemical chemistry Chemistry (miscellaneous) engineering Molecular Medicine Dicarboxylic acids Vanillin and syringaldehyde |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Molecules, Vol 26, Iss 4602, p 4602 (2021) Molecules |
| Popis: | Lignin is the second most abundant component, next to cellulose, in lignocellulosic biomass. Large amounts of this polymer are produced annually in the pulp and paper industries as a coproduct from the cooking process-most of it burned as fuel for energy. Strategies regarding lignin valorization have attracted significant attention over the recent decades due to lignin’s aromatic structure. Oxidative depolymerization allows converting lignin into added-value compounds, as phenolic monomers and/or dicarboxylic acids, which could be an excellent alternative to aromatic petrochemicals. However, the major challenge is to enhance the reactivity and selectivity of the lignin structure towards depolymerization and prevent condensation reactions. This review includes a comprehensive overview of the main contributions of lignin valorization through oxidative depolymerization to produce added-value compounds (vanillin and syringaldehyde) that have been developed over the recent decades in the LSRE group. An evaluation of the valuable products obtained from oxidation in an alkaline medium with oxygen of lignins and liquors from different sources and delignification processes is also provided. A review of C4 dicarboxylic acids obtained from lignin oxidation is also included, emphasizing catalytic conversion by O2 or H2O2 oxidation. This work was financially supported by Base Funding—UIDB/50020/2020 and Programmatic- UIDP/50020/2020 Funding of the Associate Laboratory LSRE-LCM—funded by national funds through FCT/MCTES (PIDDAC) and Base Funding—UIDB/00690/2020 of CIMO— Centro de Investigação de Montanha—funded by national funds through FCT/MCTES (PIDDAC). COST Action LignoCOST (CA17128). Carlos Vega-Aguilar thanks the Costa Rican Science, Technology and Telecommunications Ministry for the PhD. Scholarship MICITT-PINN-CON-2-1-4-17-1-002. info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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