Method for selective oxidative desulfurization in oil and product thereof

A method for selective oxidative desulfurization in oil and product thereof, comprising:

• carried out at normal temperature and pressure, in a polar phase composed of water and acetonitrile, organic sulfides in the non-polar phase oil solution are selectively removed through the direct oxidation of peroxyorganic acid and the active substances generated by the activation of peroxyorganic acid by a catalyst;
• wherein,
• first, acetonitrile and water are added to the non-polar phase petroleum and its products to form an upper and a lower layer of solution, the lower layer is a polar phase where acetonitrile and water are miscible, and the mixed solution is thoroughly mixed by shaking or stirring;
• then, the oxidant peroxyorganic acid is prepared;
• an oxidant and a catalyst are added to the above-mentioned solution to initiate the desulfurization reaction;
• the catalyst is a low-valence transition metal ion, specifically Co(II), and the metal salt used is a chloride;
• the peroxyorganic acid is peroxypropionic acid;
• the water content in the polar phase is 30-40%;
• the catalyst concentration is 4.5-9.1 mM;
• the oxidant concentration is 14.4-172.8 mM;
• the peroxypropionic acid is formed by the reaction of propionic acid, hydrogen peroxide, and sulfuric acid.