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4364664 
Journal Article 
Heterogeneous titanium catalysts for oxidation of dibenzothiophene in hydrocarbon solutions with hydrogen peroxide: On the road to oxidative desulfurization 
Fraile, JM; Gil, C; Mayoral, JA; Muel, B; Roldan, L; Vispe, E; Calderon, S; Puente, F 
2016 
Yes 
Applied Catalysis B: Environmental
ISSN: 0926-3373 
180 
680-686 
WOS:000362379800076 
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. (C) 2015 Elsevier B.V. All rights reserved. 
Sulfide oxidation; Titanium; Hydrophobicity; Hydrogen peroxide; Oxidative desulfurization