Abstract
The sulfur compounds in fluid catalytic cracked (FCC) gasoline were removed with a one-step oxidation–extraction method. Tungstophosphoric acid (HPWA), tert-butyl hydroperoxide (TBHP), and ethanol were used as catalyst, oxidant, and solvent, respectively. TBHP has a higher desulfurization degree and oil yield than hydrogen peroxide, and HPWA exhibited higher desulfurization degree and oil yield than the other kinds of acids. The one-step process has a higher desulfurization degree than the two-step process. The optimal operating parameters were obtained as follows: the catalyst amount was 5 wt%, the mole ratio of oxygen in the oxidant to the sulfur in the gasoline (O/S) was 10, the reaction temperature was 60°C, and the reaction time was 2 hr. Under these conditions, the desulfurization degree and yield of oil were both in the range of 85–90%.
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