期刊
FLUID PHASE EQUILIBRIA
卷 399, 期 -, 页码 105-114出版社
ELSEVIER
DOI: 10.1016/j.fluid.2015.04.031
关键词
Ionic liquids; Binary vapor-liquid phase equilibrium; Binary liquid-liquid equilibrium; PC-SAFT modeling
资金
- European Union in the framework of European Social Fund through the Warsaw University of Technology Development Programme
- Joint UW and WUT International PhD Programme [MPD 2010/4]
- Center for Advanced Studies WUT [MPD 2010/4]
Isothermal vapor liquid equilibrium (VLE) phase diagram measurements for the binary systems composed of tricyanomethanide-based ionic liquids and thiophene or pyridine were carried out over the whole range of composition at temperature between (293.15 and 313.15) K using a static apparatus. Moreover, liquid liquid equilibrium (LLE) phase diagrams for the investigated systems have been determined at atmospheric pressure using a dynamic method. The impact of the cation core structure (imidazolium, or pyridinium, or pyrrolidinium) on the both VLE and LLE has been discussed. Modelling of the investigated properties in terms of molecular-based equation of state, namely perturbed-chain statistical associating fluid theory (PC-SAFT), was performed. Pure-fluid parameters for ionic liquids were obtained from ambient pressure densities and the Hildebrand solubility parameters. Calculations of VLE and LLE employed binary corrections to common combining rules fitted to experimental activity coefficients of thiophene and pyridine reported previously in literature. (c) 2015 Elsevier B.V. All rights reserved.
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