| 초록 |
Mesoporous KIT-6 supported WO3 catalysts (with various WO3 loadings of 5, 10, 15and 20wt%) were synthesized by incipient impregnation method and used as the catalysts for oxidative desulfurization of model oil. The materials were well-characterized by X-ray diffraction, N2–adsorption, Scanning electron microscope, Transmission electron microscopy, H2-TPR and Raman spectroscopy. The results show that the WO3/KIT-6 catalyst with a WO3 content up to 10wt% can well dispersed on the support of mesoporous KIT-6, and from 15wt%, crystalline WO3 was generated. The application of these catalysts to the oxidative desulfurization (ODS) of aromatic sulfur compounds with H2O2 was reported. The effects of reaction temperature, catalyst amount, and H2O2/S ratio on the desulfurization of DBT over 10wt% WO3/KIT-6 were studied in detail. And when the temperature increased to 70°C, treatment of BT, DBT, 4,6-DMDBT with 10wt% WO3/KIT-6 showed 100% removal of sulfur compounds in 2h. |
