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HERO ID
2911961
Reference Type
Journal Article
Title
Distribution of cyclohexanol and cyclohexanone between water and cyclohexane
Author(s)
Pei, Y; Wang, Q; Gong, X; Lei, F; Shen, B
Year
2015
Is Peer Reviewed?
Yes
Journal
Fluid Phase Equilibria
ISSN:
0378-3812
Volume
394
Page Numbers
129-139
DOI
10.1016/j.fluid.2015.02.029
Web of Science Id
WOS:000353851800014
Abstract
Liquid-liquid equilibrium (LLE) data for ternary systems water + cyclohexane + cyclohexanol and water + cyclohexane + cyclohexanone were measured at (303.2-333.2) K and under atmospheric pressure. The reliability of the experimental tie-line data was checked by the empirical Othmer-Tobias correlation. The distribution coefficient and separation factor were used to investigate the distribution of cyclohexanol and cyclohexanone between water and cyclohexane. The results show that the distribution coefficient of cyclohexanol or cyclohexanone between organic and aqueous phases increases with the increasing content of cyclohexanol or cyclohexanone in water, and so does it with the increasing of temperature. By using the NRTL and UNIQUAC activity coefficient models, the experimentally determined LLE data, along with the LLE data for another ternary system water + cyclohexanol + cyclohexanone [G. Xing, W. Qinbo, L Fuqiong, S. Binwei, J. Chem. Eng. Data 59 (2013) 1651-1655], were correlated simultaneously. Good agreements were obtained between the correlated and experimentally determined tie-line data. The binary NRTL and UNIQUAC interaction parameters were obtained. Furthermore, four sets of quaternary LLE data for water + cyclohexane + cyclohexanol + cyclohexanone were experimentally determined at 318.2 K. The experimentally determined quaternary LLE data were compared with the NRTL model predicted LLE data, and generally agreements were obtained. It further verifies the reliability of the obtained binary model parameters, and indicates the obtained parameters could be used for prediction, as well as design and optimization of the related separation process. (C) 2015 Elsevier B.V. All rights reserved.
Keywords
Liquid-liquid equilibrium; Determination and correlation; Water; Cyclohexane; Cyclohexanol and Cyclohexanone
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