The cycling model of oxidative desulfurization of fluid catalytic cracked gasoline by phase transfer catalysis was investigated. The tetrabutylammonium bromide (TBAB) and the peroxyformic acid which have better catalytic oxidative effects were sieved from the main factors that affect the cycling reaction. From the kinetics study, it can be shown that the reaction is a pseudo first-order reaction, and the activation energy is E_a＝59.39 kJ/mol. When fluid catalytic cracking gasoline was oxidized by peroxyformic acid as oxidant and TBAB as phase transfer catalyst, the desulfurization rate was up to 98.36%.

Key words: phase transfer catalysis, oxidative desulfurization, cycling model, kinetics