Niobium Modified SBA15 was synthesized by the wetness impregnation with niobic acid as precursor. The desulfurization of FCC gasoline was carried out with the mass fraction of 30% H2O2 as the oxidant, NbSBA15 as the catalyst, and N, Ndimethyl formamide(DMF) as the extractant. The sulfur removal rate and yield of FCC gasoline can reach 95.4% and 83.8% under the following conditions: reaction temperature: 60 ℃, reaction time: 60 min, weight ratio of catalyst/FCC gasoline: 5%, mole. ratio of oxidant/sulphur compounds 3∶1, and volume ratio of solvent (DMF) to oil was 10.

Niobic acid/SBA-15 molecular sieve was prepared by impregnation method, and characterized by XRD and BET. The results show specific surface area, pore volume and pore diameters of the sample slightly decreased; however, mesoporous structure was well preserved. Its desulfurization performance from model oil was studied by static adsorption method. The results show that the sulfur removal rate can reach 31.30% and saturation adsorption capacity was 599 μg/g under the following optimum conditions: niobic acid/support 10wt%, adsorption temperature 120 ℃, time 30 min and catalyst/oil weight ratio 1∶20.