摘要
合成了3种丁基吡啶类离子液体BPyHSO4,BPyH2PO4,BPyBF4,采用FT-IR、1H NMR、UV-vis等技术手段对离子液体的结构和性质进行了表征,并研究了其对油品中碱性氮(喹啉)及非碱性氮(吲哚)的脱除,该类离子液体对喹啉及吲哚均表现出优异的脱除选择性。实验结果表明,剂油比为1∶10、剂水比为1∶2、萃取温度为25℃、萃取时间为0.5h、沉降时间为0.5 h的条件下,对喹啉脱氮率均可达到98.5%以上;剂油比为1∶10、萃取温度为20℃、萃取时间为1.5 h、沉降时间为2.0 h的条件下,对吲哚脱除率均达98.8%以上。离子液体重复使用6次,脱除活性未见明显下降。且吡啶价廉易得、离子液体合成工艺简单,因此本文期望为油品清洁能源技术提供新方法。
Three butylpyridine ionic liquids(ILs)BPy HSO4,BPy H2 PO4 and BPy BF4 were synthesized.Their structures and properties were characterized by FT-IR,1 H NMR,UV-visand their effects on the removal of basic nitrogen(quinoline)and non-basic nitrogen(indole)in oil were studied.This type of IL has excellent removal selectivity for quinoline and indole.The results showed that under the conditions of ILs/oil mass ratio of 1∶10,ILs/H2 Omass ratio of 1∶2,extraction temperature of 25℃,extraction timeof 0.5 h,and settling time of 0.5 h,the removal efficiency of quinoline can be achieved 98.5%;under the conditions of ILs/oil mass ratio of 1∶10,extraction temperature of 20℃,extraction timeof 1.5 h,and settling time of 2.0 h,the removal efficiency of indole reached more than 98.8%.The IL was repeatedly used 6 times,the removal activity did not decrease significantly.In addition,pyridine is cheap and easy to obtainand the IL synthesis process is simple.Therefore,this article hopes to provide a new method for oil clean energy technology.
作者
惠燕华
王辉
刘福胜
于世涛
宋修艳
Hui Yanhua;Wang Hui;Liu Fusheng;Yu Shitao;Song Xiuyan(College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;College of Chemistry and Pharmaceutical Sciences,Qingdao Agricultural University,Qingdao 266109,China;College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)
出处
《山东化工》
CAS
2021年第2期20-22,25,共4页
Shandong Chemical Industry
基金
国家自然科学基金面上项目(51673106)
山东省重点研发计划项目(2019GSF109015)。
关键词
丁基吡啶
离子液体
萃取
油品
脱氮
butylpyridine
ionic liquid
extraction
oil
denitrification
