基于离子液体氧化-萃取一步脱除二苯并噻吩的研究  

One-Step Desulfurization with Oxidation-Extraction Based on the Ionic Liquid

作　　者：刘习文[1,2] 黎俊波[1,2] 曹灿灿[2] 余响林[1,2] 潘志权[1,2] 

机构地区：[1]武汉工程大学绿色化工过程教育部重点实验室,湖北武汉430073 [2]武汉工程大学化工与制药学院,湖北武汉430073

出　　处：《武汉大学学报（理学版）》2012年第4期291-296,共6页Journal of Wuhan University:Natural Science Edition

基　　金：国家自然科学基金(20901063);湖北省自然科学基金(2011CDB221);教育部重点实验室开放基金(GCP200905)资助项目

摘　　要：以自制的硅胶表面担载树状钒配合物SG2.0-[VⅤO2-PAMAM-MSA]为催化剂,研究了离子液体耦合过氧化叔丁醇(TBHP)形成氧化-萃取体系一步脱除二苯并噻吩(DBT)的反应.研究结果表明,离子液体[Omim]PF6与氧化剂TBHP耦合使用时,在催化剂的催化作用下,DBT脱除率明显提高,且油品中的氧化产物二苯并噻吩亚砜(DBTO)和二苯并噻吩砜(DBTO2)迅速减少.当TBHP与DBT的摩尔比为3∶1,离子液体[Omim]PF6与模拟油的体积比为1∶3,温度90℃,反应时间60min时,DBT的脱除率可达95.0%.该氧化-萃取体系重复使用6次后,其性能没有明显降低.The ionic liquid coupling ＂oxidation-extraction＂ method has been used to remove dibenzothiophen （DBT） in model oil, using silica gel-supported dendrimer-like vanadium complex as catalyst and tert-butyl hydroperox- ide （TBHP） as oxidant. Studies showed that the conversion rate of DBT was improved apparently and the oxidation products （DBTO and DBTO2 ） in model oil were also decreased quickly when the desulfurization system contained oxidant and ionic liquid synchronously. Moreover, the DBT removal rate can reach 95.0% when the oxidation tempera- ture is 90 ℃, time is 60 min, O/S is 3 ： 1, and the volume ratio of [Omim]PF6 to model oil is 1：3. The oxidation activ- ity did not have apparent decrease even after the coupling system had been recycled for six times.

关 键 词：离子液体 脱硫 氧化-萃取 过氧化叔丁醇 树状聚酰胺 

分 类 号：O614[理学—无机化学]