A series of WO x /TiO 2 catalysts with different WO x loadings (5-20 wt%) were prepared by incipient wetness impregnation method. The synthesized samples were characterized using various physicochemical characterization techniques, such as X-ray diffraction, nitrogen adsorption-desorption, scanning electron microscopy, and Raman spectroscopy. Catalytic performance of all the catalysts was evaluated in oxidative desulfurization of model oil under very mild conditions of atmospheric pressure and 50 C in a biphasic system using hydrogen peroxide as an oxidant and acetonitrile as an extraction solvent. Excellent catalytic activity for the removal of the sulfur-containing compounds from the model oil was observed with 20 wt% WO x /TiO 2 catalyst, mainly due to the porosity associated with the TiO 2 support, fine dispersed active tungsten oxide species on the mesoporous TiO 2 support, and strong interaction between the WO x and the TiO 2 surface. Moreover, without any regeneration process, the catalytic activity of the catalyst was maintained after several recycle tests.
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