Desulfurization of gasoline by electrochemically catalytic oxidation
In order to further reduce the sulfur content in gasoline,a new gasoline desulfurization process by electrochemically catalytic oxidation was presented, and the desulfurization of gasoline was investigated in an alkaline solution.The results indicated that the theoretical decomposition voltage ranged from 0.5 V to 1.5 V.The optimal desulfurization conditions were as follows: the decomposition voltage 1.90 V, the concentration of alkali liquor 1.0 mol·L~ -1 , the volume ratio of oil-to-electrolyte 1/3, the rate of stirring 300 r·min~ -1 , the reaction temperature 50℃, the current intensity 155 mA·cm~ -2 , and the flow rate of gasoline 200 ml·min~ -1 .Under these conditions the concentration of sulfur in gasoline was reduced from 310 μg·g~ -1 to 120 μg·g~ -1 ,and the major properties of gasoline were not affected.