| 초록 |
In this paper, s series of mesoporous metal oxides (Co3O4, Fe2O3, TiO2, MoO2, WO3, CuO) were synthesized by replication method using mesoporous silica KIT-6 as hard template. The obtained materials were well-characterized by XRD, N2–sorption, SEM and used as catalysts for the removal of benzothiophene (BT), dibenzothiophene (DBT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT) from the model oil. The results showed that the catalytic activity was decreased in the order: WO3＞ TiO2＞ MoO2 ＞ Fe2O3 ≥ Co3O4 ＞ CuO. Therefore, mesoporous WO3 was used for catalytic oxidation of sulfur-containing molecules in model oil was detail under different reaction conditions (including different desulfurization systems, H2O2/DBT molar ratio, temperature and various sulfur compounds). Moreover, oxidative desulfurization system could be recycled for several times without significant decrease in activity by using mesoporous WO3 as catalyst. |
