摘要
N-甲基咪唑与氯代正丁烷亲核取代生成产物氯化1-甲基-3-丁基咪唑盐([BMIM]Cl),其分子结构经FT-IR、13C-NMR、UV、MS等表征手段得以确认.用单因素分析法考察了萃取时间、萃取温度、含硫化合物种类、剂油体积比对萃取脱硫效果的影响.结果表明,在剂油比为1∶1,萃取时间为30 min,萃取温度为40℃的温和反应条件下二苯并噻吩(DBT)的单级萃取脱除率为56.2%.多级萃取和萃取-氧化耦合脱硫操作研究表明:在最优单级萃取条件下,DBT经四级连续萃取脱除率可达97.6%;萃取-氧化耦合脱硫体系对3种含硫物质均能实现85%以上的脱除.
An ionic liquid 1-methyl-3-butyl imidazolium chloride [ BMIM] Cl was synthesized through nucleophilic substitution reaction using N-methyl imidazolium and chlorobutane , and its molecular structure was confirmed by meth-ods such as FT-IR、13C-NMR、UV、MS.Effects of extraction time, temperature, sulfur compounds （T, BT or DBT） and volume ratio were presented using single factor analysis to discuss impacts on extractive desulfurization ability .In the single-stage extractive desulfurization process , removal of DBT in n-octane using [BMIM]Cl was 56.2%with vol-ume ratio of 1∶1, in 30 min at 40℃under mild reaction conditions .Also, multistage extraction and extractive-oxida-tive desulfurization process was studied：In the 4-levels consecutive extractive desulfurization , removal of DBT in n-oc-tane using [BMIM]Cl could reach 97.6% under similar reaction condition; All sulfur compounds （T, BT or DBT） could be removed more than 85%.
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2015年第1期109-112,共4页
Journal of Xinyang Normal University(Natural Science Edition)
基金
煤转化与新型炭材料湖北省重点实验2013年度开放基金项目(WKDM201308)
高等学校博士学科点专项科研基金项目(20114219120002)
湖北省教育厅科研项目(Q20111104)
国家级大学生创新创业训练计划项目(201210488007)
关键词
咪唑盐
萃取脱硫
模型油
离子液体
imidazolium salt
extractive desulfurization
model oil
ionic liquid
