期刊
JOURNAL OF CHEMICAL THERMODYNAMICS
卷 48, 期 -, 页码 145-149出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2011.12.006
关键词
Benzene/cyclohexane separation; Ionic liquid [C(n)mim][PF6]; (Liquid plus liquid) equilibria; NRTL correlation
资金
- Major State Basic Research Development Program of China (973 Program) [2012CB720500]
- National Natural Science Foundation of China (NSFC) [21076074, 21006029]
- Shanghai Pujiang Talents Program [10PJ1402400]
- Shanghai Natural Science Foundation [10ZR1407200]
- Program of Introducing Talents of Discipline to Universities (111 Project) [B08021]
- Fundamental Research Funds for the Central Universities of China
- Max Planck Partner Group from the Max Planck Society, Germany
In the catalytic hydrogenation of benzene to cyclohexane, the separation of unreacted benzene from the product stream is inevitable and essential for an economically viable process. In order to evaluate the separation efficiency of ionic liquids (ILs) as a solvent in this extraction processes, the ternary (liquid + liquid) equilibrium of 1-alkyl-3-methylimidazolium hexafluorophosphate, [C(n)mim][PF6] (n = 4, 5, 6), with benzene and cyclohexane was studied at T = 298.15 K and atmospheric pressure. The reliability of the experimentally determined tie-line data was confirmed by applying the Othmer-Tobias equation. The solute distribution coefficient and solvent selectivity for the systems studied were calculated and compared with literature data for other ILs and sulfolane. It turns out that the benzene distribution coefficient increases and solvent selectivity decreases as the length of the cation alkyl chain grows, and the ionic liquids [C(n)mim][PF6] proved to be promising solvents for benzene-cyclohexane extractive separation. Finally, an NRTL model was applied to correlate and fit the experimental LLE data for the ternary systems studied. (C) 2011 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据