通过直接沉淀法制备钨酸锰，采用高温煅烧和双氧水活化的钨酸锰为催化剂，过氧化氢为氧化剂，咪唑氟硼酸盐离子液体为萃取剂，氧化脱除模拟油中的二苯并噻吩（ DBT）。研究了反应时间、反应温度、催化剂的加入量、氧化剂用量、萃取剂类型、硫化物类型等因素对催化氧化脱硫的影响，同时考察催化剂/萃取剂脱硫体系循环使用性能。结果表明，最优工艺条件为：反应温度为50℃，H2 O2加入量为0.3 mL，催化剂为0.03 g，以咪唑氟硼酸盐为萃取剂，反应时间为60 min时，二苯并噻吩的脱除率可达90%。催化剂/离子液体回收重复使用5次，催化活性无明显下降。%Manganese tungstate was prepared by direct precipitation method. To improve the oxidative des-ulfurization activity by high temperature calcination activation and activation of hydrogen peroxide. Activa-ted MnWO4 as catalyst,hydrogen peroxide as the oxidant,imidazole fluoroborate as extraction agent,oxi-dized removal dibenzothiophene( DBT)in simulated oil. The influence of reaction time,reaction tempera-ture,amount of catalyst,amount of oxidant,type of extractant,type sulfide,etc. on catalytic oxidative des-ulfurization were studied. The results indicated the optimized desulfation conditions were as follows:tem-perature 50℃,0. 3 mL of hydrogen peroxide,0. 03 g of catalyst,imidazole tetrafluoroborate as the extract-ant,the reaction time was 60 min. The desulphurization rate was up to 90%. The reaction system could re-cycle 5 times with a slight decrease in activity.
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