| 초록 |
A series of mesoporous tungsten oxides were synthesized by using nano-replication method via mesoporous silica KIT-6 as a hard template with different annealing temperatures.The synthesized mesoporous tungsten oxides were well-characterized by X-ray diffraction (XRD), N2–adsorption, Scanning electron microscope (SEM), H2-TPR and Raman spectroscopy. The catalytic activities of mesoporous WOx which were calcinated at different temperatures for the oxidative desulfurization of dibenzothiophene (DBT) in model oil were investigated under atmospheric pressure at 50oC. The results showed that the catalytic activity was increased in the order: WOx(400oC)≥WOx(500oC)≥WOx(600oC)＞WOx(300oC)＞ WOx(200oC). Mesoporous WOx was also investigated to be used for catalytic oxidation of sulfur-containing molecules in model oil under different reaction conditions (different desulfurization systems, H2O2/S molar ratio and different sulfur-containing compounds). |
