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Heterogeneous titanium catalysts for oxidation of dibenzothiophene in hydrocarbon solutions with hydrogen peroxide: On the road to oxidative desulfurization

Fraile, José M. et al.

Applied catalysis. B. Environmental. Volume 180 (2016); pp 680-686 -- Elsevier

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  • Title:
    Heterogeneous titanium catalysts for oxidation of dibenzothiophene in hydrocarbon solutions with hydrogen peroxide: On the road to oxidative desulfurization
  • Author: Fraile, José M.;
    Gil, Cristina;
    Mayoral, José A.;
    Muel, Beatriz;
    Roldán, Laura;
    Vispe, Eugenio;
    Calderón, Santiago;
    Puente, Fernando
  • Found In: Applied catalysis. B. Environmental. Volume 180 (2016); pp 680-686
  • Journal Title: Applied catalysis. B. Environmental
  • Subjects: Catalysis--Environmental aspects--Periodicals; Sulfide oxidation--Titanium--Hydrophobicity--Hydrogen peroxide--Oxidative desulfurization; Dewey: 660.2995
  • Rights: Licensed
  • Publication Details: Elsevier
  • Abstract: Graphical abstract Highlights Sulfides in hydrocarbon solution are oxidized with aqueous hydrogen peroxide. Titanium grafted on hydrophobic silica catalyzes the oxidation. No co-solvent or surfactant is required. The method is compatible with the use of industrial grade solvent. Abstract Titanium centers grafted on hydrophobic silica bearing long chain silanes (octadecyl or octyl) are able to oxidize dibenzothiophene (DBT), as well as simpler sulfides and 2, 6-dimethyldibenzothiophene, to the corresponding sulfone in hydrocarbon solution with aqueous hydrogen peroxide in only a slight excess over the stoichiometric amount, without using any surfactant or cosolvent. The productivity per gram of catalyst or per Ti site can be optimized by tuning the silanization of the silica (or using a commercially available silanized silica) and the Ti loading of the catalyst. The catalyst preparation and the oxidation reaction are compatible with the use of an industrial grade aromatic solvent.
  • Identifier: System Number: ETOCvdc_100064496521.0x000001; Journal ISSN: 0926-3373; 10.1016/j.apcatb.2015.07.018
  • Publication Date: 2016
  • Physical Description: Electronic
  • Shelfmark(s): 1571.921700
  • UIN: ETOCvdc_100064496521.0x000001

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