Fe基离子液体中Schiff碱Co络合物催化氧化燃油脱硫  

Oxidative desulfurization of fuels catalyzed by Schiff-base cobalt complex in Fe-based ionic liquid

作　　者：高丽霞[1] 戴子林[1] 李桂英[1] 

机构地区：[1]广州有色金属研究院,广东广州510651

出　　处：《化工进展》2014年第12期3393-3398,共6页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金项目(21076019)

摘　　要：将离子液体Fe Cl3/Bmim Cl与Schiff碱Co络合物Co L组成催化体系,以氧气为氧化剂,噻吩的正辛烷溶液为模拟油,考察该脱硫体系脱除模拟油中噻吩硫的性能。结果表明,最佳脱硫条件为:模拟油25m L;IL-Fe Cl3/Bmim Cl摩尔比为1,8m L;O250m L/min;反应温度62℃;Co L0.13g;时间6h,最终脱硫率可达96%(质量分数),脱硫后油品中噻吩含量最终可降到50μg/g以下。噻吩的氧化产物为SO42-离子。离子液体再生4次后脱硫性能开始下降。该脱硫体系对实际柴油中的噻吩硫催化氧化脱硫效果可达100%,该脱硫体系具有实际应用意义。The oxidative desulfurization performance on model oil with thiophene was investigated with ionic liquid FeCl3/BmimCl and Schiff-base cobalt complex CoL and oxygen as the desulfurization system. Thiophene removal rate could reach 96%under the optimum condition,in which model oil dosage was 25mL,mole ratio of FeCl3/BmimCl was 1∶1 and its dosage was 8 mL,oxygen flow rate was 50 mL/min,reaction temperature was 62℃,CoL dosage was 0.13g,reaction time was 6h. The final thiophene content in the desulfurized model oil could be less than 50μg/g,and the oxidation product of thiophene was SO42？. The ionic liquid FeCl3/BmimCl could be recycled 4 times without significant decrease in desulfurization capability. The oxidative desulfurization rate of diesel oil could reach 100%with the above desulfurization system,which had good application prospect.

关 键 词：离子液体 SCHIFF碱 Co络合物 氧化 脱硫 

分 类 号：TE624[石油与天然气工程—油气加工工程]