ClO2-Mediated Oxidation of the TEMPO Radical: Fundamental Considerations of the Catalytic System for the Oxidation of Cellulose Fibers - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Molecules Année : 2023

ClO2-Mediated Oxidation of the TEMPO Radical: Fundamental Considerations of the Catalytic System for the Oxidation of Cellulose Fibers

Résumé

The reaction mechanism of ClO2-mediated TEMPO oxidation was investigated by EPR spectroscopy and UV–Vis spectroscopy in the context of an alternative TEMPO sequence for cellulose fiber oxidation. Without the presence of a cellulosic substrate, a reversibility between TEMPO and its oxidation product, TEMPO+, was displayed, with an effect of the pH and reagent molar ratios. The involvement of HOCl and Cl−, formed as byproducts in the oxidation mechanism, was also evidenced. Trapping HOCl partly inhibits the reaction, whereas adding methylglucoside, a cellulose model compound, inhibits the reversibility of the reaction to TEMPO.

Dates et versions

hal-04416138 , version 1 (25-01-2024)

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Citer

Laura Giraldo Isaza, Gérard Mortha, Nathalie Marlin, Florian Molton, Carole Duboc. ClO2-Mediated Oxidation of the TEMPO Radical: Fundamental Considerations of the Catalytic System for the Oxidation of Cellulose Fibers. Molecules, 2023, 28 (18), pp.6631. ⟨10.3390/molecules28186631⟩. ⟨hal-04416138⟩

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