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Received February 13, 2016
Accepted May 30, 2016
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Vapor-liquid equilibria for the binary mixtures of methanol+cyclopentyl methyl ether (CPME)

Department of Chemical and Biomolecular Engineering, Sogang University, C. P. O. Box 1142, Seoul 04107, Korea
limjs@sogang.ac.kr
Korean Journal of Chemical Engineering, October 2016, 33(10), 2961-2967(7), 10.1007/s11814-016-0145-z
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Abstract

VLE data for binary systems of methanol (1)+cyclopentyl methyl ether (2) were measured at five equalspaced temperatures between 313.15 and 353.15 K using a circulation-type equilibrium apparatus with on-line gas chromatography analysis. This binary system shows strong positive deviation from Raoult’s law and forms an azeotrope at each temperature. The experimental data were correlated with the Peng-Robinson equation of state using the Wong-Sandler mixing rule combined with the NRTL excess Gibbs free energy model. The overall average relative deviations of pressure (ARD-P (%)) and vapor phase compositions (ARD-y (%)) between experimental and calculated values through the temperature range from 313.15 to 353.15 K were 0.298 and 0.499%, respectively. In the range of experimental temperature, azeotropic compositions showed a linear relationship with temperature and were correlated by the empirical equation of xazeo=0.001 T/K+0.617.

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