Synthesis and characterization of novel nanocomposite, anatase sandwich type polyoxometalate, as a reusable and green nano catalyst in oxidation desulfurization of simulated gas oil

(Bu4N)(7)H-3[P2W18Cd4(Br)(2)O-68]-TiO2 nanocomposite have been synthesized first by reaction of A-beta-Na8HPW9O34 with cadmium nitrate and next condensation with titanium tetraisopropoxide at 100 degrees C via sol-gel method under oil-bath condition. The materials characterized by Cd-113 NMR, P-31 NMR, XRD, TEM and UV-vis techniques. The crushed nano leaf of anatase phase is 20 nm in nature and fixing of (Bu4N)(7)H-3[P2W18Cd4(Br)(2)O-68] decreases its size. As seen in TEM image, the nano particles of (Bu4N)(7)H-3[P2W18Cd4(Br)(2)O-68]-TiO2 are small with a size of about 10 nm. This anatase nanocomposite polyoxometalate was shown be able to oxidative desulfurization of simulated gas oil with high yield. (C) 2012 Elsevier B.V. All rights reserved.