酸性离子液体[（CH2）4SO3HMIm]TSO在噻吩类氧化脱硫中的应用

在没有任何有机溶剂和卤素的条件下，以质量分数30％的H2O2为氧化剂，Na2WO4·2H2O为催化剂，在酸性离子液体（CH2）4SO3HMIm]TSO中，将柴油中的噻吩硫氧化为矾类物质，并通过离子液体将其萃取，同时考察了反应温度、反应时间和离子液体用量等因素对氧化脱硫反应的影响，得出最佳反应条件：3mL油样（含硫质量分数为500μg／g），n（离子液体）／n（Na2WO4·2H2O）=40：1，0．7mL双氧水，333K，2h，脱硫率为97．4％。反应结束后，通过简单的倾倒将油样和催化剂分离，重复使用4次，其催化活性基本不变。

The Application of the Acidic Ionic Liquid of [(CH2)4SO3HMim]TSO in Thiophene-Based Oxidative Desulfurization

Without any organic solvents and halide, the oxidation of thiophenic sulfur into sulfone which would be extracted by the ionic liquid catalyzed by Na2WO4 ·2H2O with mass fraction of 30% hydrogen peroxide in acidic ionic liquid E（CH2）4SO3 HMIm]TSO was investigated. Effects of temperature, reaction time and amount of catalyst on the reaction of oxidative desulfurization were also investigated. The optimal reaction conditions are as follows： 3 mL oil sample （500 μg/g sulfur content）, the ratio of 40：1 for n（IL）/n（Na2 WO4·2 H2 O）, 0.7 mL hydrogen peroxide, reaction temperature of 333 K and reaction time of 2 h. And the rate of desulfurization is 97. 4% under this condition. When the reaction was completed, diesel oil and catalyst could be separated by simple decantation. The catalyst could be recycled 4 times without obvious change in catalytic activity.