Thesis defense: Nour Zeaiter
Biomass valorization
ionic liquids
polyoxometalate
lignins
catalytic oxidation
sustainable chemical processes
humins
Monday, December 9th 2024, 2 pm, UVSQ, Versailles
Valorization of biomass residues by oxidative depolymerization using Ionic Liquids based on Polyoxometalate
The growing reliance on fossil resources highlights the urgent need for sustainable alternatives. Recent advancements in biorefineries have paved the way for substituting petrochemical products with bio-based products. However, the conversion processes generate by-products, such as lignins and humins, which remain largely unvalorized and hinder the efficiency of biomass utilization. This thesis aims to address these challenges by investigating the potential of Polyoxometalate- Ionic Liquids (POM-ILs) for the efficient depolymerization of lignins and humins. This study examines the synthesis and use of polyoxometalate-based ionic liquids (POM- ILs) as dual-function systems, serving as both catalysts and solvents in catalytic oxidation process under mild conditions, to facilitate the transformation of humins and lignins into valuable products. This research provides new insights into lignins and humins conversion, advancing the development of greener and more efficient chemical process.
The growing reliance on fossil resources highlights the urgent need for sustainable alternatives. Recent advancements in biorefineries have paved the way for substituting petrochemical products with bio-based products. However, the conversion processes generate by-products, such as lignins and humins, which remain largely unvalorized and hinder the efficiency of biomass utilization. This thesis aims to address these challenges by investigating the potential of Polyoxometalate- Ionic Liquids (POM-ILs) for the efficient depolymerization of lignins and humins. This study examines the synthesis and use of polyoxometalate-based ionic liquids (POM- ILs) as dual-function systems, serving as both catalysts and solvents in catalytic oxidation process under mild conditions, to facilitate the transformation of humins and lignins into valuable products. This research provides new insights into lignins and humins conversion, advancing the development of greener and more efficient chemical process.
Director: Sébastien Floquet, ILV, Versailles
co-Supervisors: Betty Cottyn, INRAE, IJPB, Versailles, Catherine Roch, ILV, Versailles & Bruce Pégot, ILV, Versailles
Members of the jury
> Gwladys Pourceau (Rapportrice) - LG2A, Université d’Amiens
> Sylvain Duval (Rapporteur) - UCCS, Université de Lille
> Jakob Albert (Examinateur) - Université de Hambourg, Allemagne
Giang Vo-Thanh (Examinateur) - ICMMO, Université Paris-Saclay
KarineVigier de Oliveira ( Examinatrice) - IC2MP, Université de Poitiers
To attend, contact, Betty Cottyn
Research developed at the Institute Jean-Pierre Bourgin for Plant Sciences in collaboration.
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