Progresses in Research on the Oxidation Desulfurization Mechanism for Oil
Due to the several advantages, such as low cost and high desulphurization rate, the oxidation desulphurization may become one of the main techniques of producing super low sulfur content clean fuel oil without hydrogenation in the future. Various mechanisms of oxidation desulfuriza?tion for oil are summarized, including catalytic oxidation desulfurization which employs various catalysts to oxidize the sulfur梒ontained oil into different intermediates, catalytic oxidation ionic liquids desulfurization which employs the peroxy-intermediates and sulfur-contained compound to react with each other by elementary reaction, photochemical oxidation desulfurization which adopts various photo-sensitizer, electrochemical oxidation desulfurization and biological oxidation desulfurization which uses microorganism or enzyme as catalysts, etc. It is pointed that the studies on mechanisms at present are insufficient, and some of them are not clear and definite, which need to be sludied in depth.
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