Isobaric Vapor-Liquid Equilibria of Mesitylene + 1- Heptanol and Mesitylene +1-Octanol at 97.3 kPa

Isobaric vapor-liquid equilibrium measurements are reported for the binary mixtures of Mesitylene + 1-Heptanol and Mesitylene + 1-Octanol at 97.3 kPa. The measurements have been performed using a vapor recirculating type (modified Othmer's) equilibrium still. Both the mixtures show positive deviation from ideality. The Mesitylene + 1-Heptanol mixture forms an azeotrope whereas Mesitylene + 1- Octanol form a non – azeotropic mixture. The activity coefficients have been calculated taking into consideration the vapor phase nonideality. The data satisfy the thermodynamic consistency tests of Herington, and Hirata. The activity coefficients have been satisfactorily correlated by means of the Margules, Redlich-Kister, Wilson, Black, and NRTL equations. The activity coefficient values have also been obtained by UNIFAC method.





References:
[1] B. N. Raju, R. Ranganathan, and M. N. Rao, "Vapor-liquid equilibrium
still for partially miscible systems," Indian Chemical Engineer, 1965,
vol. 7, pp. T33-T37.
[2] B. Kumar, and K. S. N. Raju, "Vapor-liquid equilibrium data for the
systems 2-methoxyethanol-ethylbenzene, 2-methoxyethanol-p-xylene,
and 2-ethoxyethanol-p-xylene," Journal of Chemical and Engineering
Data, 1977, vol. 22, pp. 134-137.
[3] J. A. Riddick, W. B. Bunger, and T. K. Sakano, Organic Solvents:
Physical Properties and Methods of Purification. 4th ed. Wiley-
Interscience: New York, 1986.
[4] B. K. Sood, O. P. Bagga, and K. S. N. Raju, "Vapor-liquid equilibrium
data for systems ethylbenzene-anisole and p-xylene-anisole," Journal of
Chemical and Engineering Data, 1972, vol. 17, pp. 435-438.
[5] H. C. Van Ness, and M. M. Abbott, Classical Thermodynamics of Nonelectrolyte
Solutions. McGraw-Hill: New York, 1982.
[6] E. W. Lyckman, E. C. Eckert, and J. M. Prausnitz, "Generalized Liquid
Volumes and Solubility Parameters for Regular Solution
Application", Chemical Engineering Science, 1965, vol. 20, pp. 703-
706.
[7] C. Tsonopoulos, "An empirical correlation of second virial coefficients,"
AIChE Journal, 1974, vol. 20, pp. 263-272.
[8] R. C. Reid, J. M. Prausnitz, and B. E. Poling, The Properties of Gases &
Liquids. 4th ed. McGraw-Hill: New York, 1987.
[9] J. A. Riddick, W. B. Bunger, and T. K. Sakano, Organic Solvents:
Physical Properties and Methods of Purification. 3rd ed. Wiley-
Interscience: New York, 1970.
[10] T. Boublik, V. Fried, and E. Hala, The Vapor Pressures of Pure
Substances. Elsevier: New York, 1975.
[11] E. F. G. Herington, "Tests for the consistency of experimental isobaric
vapor-liquid equilibrium data," Journal of Institute of Petroleum, 1951,
vol. 37, pp. 457-470.
[12] H. Renon, and J. M. Prausnitz, "Local compositions in thermodynamic
excess functions for liquid mixtures," AIChE Journal, 1968, vol. 14, pp.
135-144.
[13] V. K. Rattan, S. Kapoor, and S. Singh, "Isobaric vapor-liquid equilibria
of 1-butanol- p-xylene system," International Journal of
Thermophysics, 2006, vol. 27, pp. 85 -91.
[14] J. Gmehling, J. Lohmann, and R. Wittig, "Vapor-liquid equilibria by
UNIFAC Group Contribution. 6. Revision and extension," Industrial
Engineering Chemistry Research, 2003, vol. 42, pp.183-188.