Abstract: F127-MoO3/Al2O3 catalysts were prepared by precipitation method using poly ethylene oxide - propylene oxide - ethylene oxide (F127) as template agent， and characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and field emission scanning electron microscope (FE-SEM). The influences of catalyst preparation and reaction conditions on oxidative desulfurization of model oil were investigated. The result showed that the addition of F127 as template agent promotes the high dispersion of MoO3 on the surface of Al2O3. For 10.0 ml model fuel (mass fraction of sulfur element is 400 ug/g)，DBT in the model oil can be almost totally removed under the conditions of m (catalyst)/m (model oil)=0.71%, V (H2O2)/V (model oil)=0.30%, reaction temperature 60 ℃ and 10 min, and converted into DBTO2. The desulfurization rate of DBT is 95.81% after the catalysts was used for eight times.

Key words: catalyst, poly ehylene oxide-propylene oxide-ethylene oxide, alumina, molybdenum oxide, dibenzothiophene, oxidative desulfurization