采用钨酸盐/H202/N-甲基吡咯烷酮硫酸氢盐（[HNMP][HSO4]）体系对模拟燃油和实际燃油进行深度催化氧化脱硫研究.采用X线衍射仪（XRD）、傅里叶红外光谱仪（FT-IR）以及热分析仪（TG）对合成的2种Keggin型钨酸盐（烷基硅钨酸铵（Q4SiW）和烷基磷钨酸铵（Q3 PW））进行表征.考察不同脱硫体系、不同催化剂、催化剂用量、H2O2用量、反应温度和不同硫化物等对模拟油脱硫效果的影响.结果表明：在反应温度60℃,反应时间4h,模拟油3 g,[HNMP][HSO4]1g,n（0）∶n（S）∶n（催化剂）=300∶50∶1,Q4SiW为催化剂条件下,此催化氧化体系对噻吩（TS）、苯并噻吩（BT）和二苯并噻吩（DBT）的脱硫率分别为54.2％、87.4％以及99.1％,且重复使用5次,催化氧化性能并未明显降低.

Ionic liquid [EMIM]Br-FeCl2 is used in extraction desulfurization.The desulfurization efficiency on thiophene(TS),benzothiophene(BT),dibenzothiophene(DBT) in model oil and gasoline is investigated.The experimental results show that when the extraction temperature and time are 40℃ and 4 h,respectively,the removal rate of TS at 2∶ 1 mass ratio of [EMIM]Br-FeCl2 to oil is 25.6%.When the mass ratio of [EMIM]Br-FeCl2 to oil is 2∶ 5,the desulfurization efficiencies of BT and DBT reached to 72.4% and 79.9% respectively.As the optimum conditions of extracting TS are used on FCC gasoline,the single-pass desulfurization rate ranges from 50.3% to 54.5%,and the rate ranges from 89.3% to 91.3% after five times of extraction.The ionic liquid can be recycled more than ten times without significant decrease in activity.