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四乙基氯化铵与不同供氢溶剂形成的低共熔溶剂分离芳烃/脂肪烃混合物研究

发表时间:2017-01-15  浏览量:1707  下载量:455
全部作者: 王言,侯玉翠,任树行,么聪菲,纪柚安,吴卫泽
作者单位: 北京化工大学化学工程学院,化工资源有效利用国家重点实验室;太原师范学院化学系
摘 要: 采用受氢溶剂(hydrogen bond acceptor,HBA)四乙基氯化铵(tetraethylammonium chloride,TEAC)与3种不同的供氢溶剂(hydrogen bond donor,HBD)即乙酰丙酸(levulinic acid,LA)、乙二醇(ethylene glycol,EG)、三乙二醇(triethylene glycol,TEG)分别组成低共熔溶剂(deep eutectic solvents,DESs),并用来分离甲苯/庚烷混合物体系。通过对比发现,当TEAC与LA的物质的量比为1:4时,合成的DESs能够较好地分离甲苯/庚烷混合物。然后用TEAC与LA合成的DES分离不同的模拟油,当模拟油组成为甲苯和不同直链脂肪烃时,发现脂肪烃链长越长,越有利于得到纯度较高的芳烃产品;当模拟油组成为苯和环己烷时,发现TEAC与LA合成的DES对该体系也有较好的萃取效果。TEAC与LA合成的DES对于两类模拟油体系均取得了较好的效果,该研究可为DESs分离芳烃/脂肪烃体系的应用提供参考。
关 键 词: 萃取;低共熔溶剂;芳烃和脂肪烃混合物;受氢溶剂;供氢溶剂
Title: Separating aromatics from aromatics/aliphatics mixtures using deep eutectic solvents formed by tetraethylammonium chloride and different hydrogen bond donors
Author: WANG Yan, HOU Yucui, REN Shuhang, YAO Congfei, JI Youan, WU Weize
Organization: State Key Laboratory of Chemical Resource Engineering, College of Chemical Engineering, Beijing University of Chemical Technology; Department of Chemistry, Taiyuan Normal University
Abstract: In this paper, three kinds of deep eutectic solvents (DESs) were used to separate toluene/ n-heptane mixtures. The DESs were made of tetraethylammonium chloride (TEAC) as a hydrogen bond acceptor (HBA) and levulinic acid (LA), ethylene glycol (EG), and triethylene glycol (TEG), which was used as a hydrogen bond donor (HBD) respectively. It was found that when the mole ratio of TEAC to LA was 1:4, this kind of DES showed the best performance to separate toluene from n-heptane among the three kinds of synthetized DESs. Then the DES made of TEAC and LA was used to separate various model oil systems. When the model oil was made of toluene and linear aliphatics, the longer the chain of aliphatics, the higher purity of toluene was obtained. When the model oil was made of benzene and cyclohexane, the DES could also separate the mixture well even though the aliphatic was in a ring state. As a conclusion, the DES made of TEAC and LA at a mole ratio of 1:4 can separate aromactics from aliphatics mixtures efficiently. This work can provide useful information for the application of DESs to separate aromactics/aliphatics mixtures.
Key words: extraction; deep eutectic solvents; aromatics and aliphatics mixtures; hydrogen bond acceptor; hydrogen bond donor
发表期数: 2017年1月第1期
引用格式: 王言,侯玉翠,任树行,等. 四乙基氯化铵与不同供氢溶剂形成的低共熔溶剂分离芳烃/脂肪烃混合物研究[J]. 中国科技论文在线精品论文,2017,10(1):106-112.
 
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