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Article Dans Une Revue Journal of Porous Materials Année : 2019

Selective sulfoxidation reactions with H2O2 catalyzed by Ti-containing SBA-15 materials

Résumé

This contribution relates the behavior of Ti-SBA-15 catalysts in the sulfoxidation reaction with hydrogen peroxide under mild conditions (40–70 °C). Ti-SBA-15 samples with 1, 3 and 5 wt% of TiO2 have been prepared by grafting SBA-15 silica with Ti(OiPr)4 in ethanol followed by calcination. Due to their mesopores, the Ti-containing catalysts accommodated large molecules like methyl-phenyl-sulfide, diphenylsulfide and dibenzothiophene, which were selectively oxidized into their corresponding sulfoxides and sulfones. The turnover frequency was correlated with the amount of the tetrahedral Ti atoms in the catalyst. During the oxidation process performed in batch mode, with acetonitrile or ethanol as solvent, the catalyst topology and texture were preserved, but the nature of the Ti species suffered some changes.

Domaines

Chimie Catalyse
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Dates et versions

hal-02073786 , version 1 (20-03-2019)

Identifiants

Citer

Radu Dorin Andrei, Nathan Cambruzzi, Magali Bonne, Lebeau Bénédicte, Vasile Hulea. Selective sulfoxidation reactions with H2O2 catalyzed by Ti-containing SBA-15 materials. Journal of Porous Materials, 2019, 26 (2), pp.533-539. ⟨10.1007/s10934-018-0640-1⟩. ⟨hal-02073786⟩
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