Photocatalytic oxidation of aliphatic and aromatic sulfides in the presence of silica adsorbed or zeolite-encapsulated 2,4,6-triphenyl(thia)pyrylium

Sergio M. Bonesi, Esther Carbonell Llopis, Hermenegildo Garcia, Maurizio Fagnoni, Angelo Albini

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

Solid photocatalysts in which the 2,4,6-triphenylpyrylium (TP) or 2,4,6-triphenylthiapyrylium cation (TTP) are encapsulated within zeolite Y or deposited on mesoporous silica are used as photosensitizers for the oxidation of sulfides, both aromatic and aliphatic, in solvents of various polarity. Contrary to the same cations in solution, these solid sensitizers are not significantly degraded during operation. An effective oxygenation takes place leading to sulfoxides, disulfides, sulfinic and sulfenic esters as well as sulfonic acids. This large scope method shows a limited dependence on the substrate structure and on conditions and is suitable for the abatement of sulfur-containing pollutants.

langue originaleAnglais
Pages (de - à)368-375
Nombre de pages8
journalApplied Catalysis B: Environmental
Volume79
Numéro de publication4
Les DOIs
Etat de la publicationPublié - 8 mars 2008
Modification externeOui

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