Abstract: A series of alkylimidazolium chlorate type of ionic liquids (ILs) bearing different length of alkyl chains were synthesized. The desulfurization for the model or true oil using ILs as extracting agent were investigated under different conditions. The results show that the best desulfurization rate was obtained after 90 min under the condition of V［C7mim］ClO₃/VOil=5∶1 at 60 ℃ using ［C7mim］ClO₃ as extracting [KG*4]reagent. The [KG*4]sulfur [KG*4]removal [KG*4]reached 82.15 % for [KG*4]the [KG*4]model oil (［S］0=1 160 μg/g), 56.09% for the FCC gasoline(［S］0=117 μg/g) and 53.01% for the FCC diesel (［S］0=1 974 μg/g). After the reaction, the fuel oil and ionic liquid can be separated simply by decantation. The ILs were then purified by fractional distillation. The ILs can be recycled at least for 5 times without siginificant loss of activity.

Key words: Alkylimidazolium chlorate ionic liquid,    ,  Extraction,    ,  Desulfurization,   ,  FCC gasoline,   ,  FCC diesel

摘要： 实验合成了烷基碳链长度不同的烷基咪唑氯酸盐离子液体，分别考察了不同条件下离子液体对模拟油品和实际油品的脱硫效果。结果表明，在60 ℃下，反应时间为90 min，［C7mim］ClO3离子液体作为萃取剂，VIL/VOil=5∶1时，对初始硫质量分数为1 160 μg/g的模拟油品一次萃取脱硫率可达82.15%，[CM（10]初始硫质量分数为[CM）]117 μg/g的催化裂化汽油一次脱硫率为56.09%，初始硫质量分数为1 974 μg/g[CM（14]的催化裂化柴油一次脱硫率为[CM）]53.01%。反应结束后，通过简单的倾倒即可将油样和离子液体分离，重复使用5次，催化活性不降低。

关键词: 烷基咪唑氯酸离子液体 , 萃取 , 脱硫 , 催化裂化汽油 , 催化裂化柴油