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Measurement, correlation and prediction of binary vapor‐liquid equilibria for alcohol‐tetrachloroethene systems
Author(s) -
Venkateswara Rao K.,
Ravi Prasad A.
Publication year - 1984
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450620122
Subject(s) - unifac , uniquac , non random two liquid model , activity coefficient , chemistry , isobaric process , thermodynamics , binary number , alcohol , mole fraction , butanol , correlation coefficient , ethanol , organic chemistry , statistics , mathematics , physics , arithmetic , aqueous solution
Abstract Experimental isobaric vapor‐liquid equilibria of binary mixtures of tetrachloroethene with ethanol, 2‐propanol, 2‐butanol and 2‐pentanol have been measured at 101.08 kPa. The UNIFAC (Fredenslund et al., 1975), a group contribution model and the activity coefficient models of Margules and Van Laar (as presented by Carlson and Colburn, 1942), Wilson (1964), NRTL (Renon and Prausnitz, 1968) and UNIQUAC (Abrams and Prausnitz, 1975) have been used to predict the vapor composition from measured T‐x data of ten binary mixtures of alcohol‐tetrachloroethene including these four systems. The average absolute deviation between the experimental and the predicted vapor composition with the UNIFAC model ranges from 0.006 to 0.023 mole fraction and that with the activity coefficient models ranges from 0.003 to 0.038. The maximum deviation in both the cases occurred in the data of 1‐propanol (Venkateswara Rao et al., 1980).