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Updated: Dec 13, 2025
10:18
Extraction of Lignin with High β-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield
Published on: January 7, 2019
21.6K
Molecular Oxygen Lignin Depolymerization: An Insight into the Stability of Phenolic Monomers
Yannick Mathieu1, Juan D Vidal1, Lourdes Arribas Martínez2
1Instituto de Tecnología Química, Universitat Politècnica de València - Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022, Valencia, Spain.
Chemsuschem
|August 5, 2020
Summary
Understanding the instability of phenolic monomers during lignin depolymerization is key. This study evaluates individual compound reactivities to improve lignin valorization and maximize valuable product yields.
Area of Science:
- Chemical Engineering
- Polymer Chemistry
- Organic Chemistry
Background:
- Oxidative depolymerization of lignin produces valuable phenolic monomers.
- These monomers are unstable under reaction conditions due to secondary reactions.
- Understanding these degradation pathways is crucial for efficient lignin valorization.
Purpose of the Study:
- To investigate the individual stabilities of key lignin-derived phenolic compounds.
- To elucidate mechanisms behind monomer instability and repolymerization.
- To develop stabilization strategies for enhanced product yields.
Main Methods:
- Assessing the stability of vanillin, vanillic acid, acetovanillone, phenol, and anisole.
- Studying their reactivity under oxidative depolymerization conditions.
- Applying stabilization strategies to technical pinewood lignin.
Main Results:
- Identified key phenolic compounds are prone to degradation and repolymerization.
- Elucidated the influence of oxidation conditions on monomer stability.
- Demonstrated the effectiveness of proposed stabilization strategies in enhancing yields.
Conclusions:
- Individual compound stability assessment is vital for lignin valorization.
- Controlling secondary reactions improves yields of target phenolic monomers.
- Developed strategies offer a pathway to maximize value-added products from lignin.
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