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Received November 21, 2006
Accepted June 28, 2007
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Excess Gibbs free energy of butyl acetate with cyclohexane and aromatic hydrocarbons at 308.15K
Department of Applied Sciences, Deenbandhu C. R. University of Science & Technology, Murthal-131 039, India 1Department of Chemistry, Maharshi Dayanand University, Rohtak-124 001, India 2Department of Chemical Engineering, Yonsei University, 134, Shinchon-dong, Seodaemun-gu, Seoul 120-749, Korea
sanjeevmakin@gmail.com
Korean Journal of Chemical Engineering, March 2008, 25(2), 273-278(6), 10.1007/s11814-008-0048-8
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Abstract
Molar excess Gibbs free energies of mixing (CE) for butyl acetate+cyclohexane or benzene or toluene or o- or m- or p-xylene were calculated by using Barker’s method from the measured vapor pressure data by static method at 308.15±0.01 K over the entire composition range. The GE values for the binary mixtures containing cyclohexane or benzene are positive; while these are negative for toluene, o-, m- and p-xylene system over the whole composition range. The GE values of an equimolar mixture for these systems vary in the order: cyclohexane>benzene>o-xylene>m-xylene>p-xylene>toluene. The GE values for these systems were also calculated by Sanchez and Lacome theory using the previously published excess enthalpy and excess volume data. It is found that while values of GE from Sanchez and Lacombe theory are in reasonably good agreement with those calculated by Barker method for m-xylene and pxylene mixtures, agreement is very poor for other systems although they predict the sign of GE data except in the case of mixtures containing benzene.
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References
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Lim JS, Park JY, Kang JW, Lee BG, Fluid Phase Equilib., 243(1-2), 57 (2006)
Ortega J, Espiau F, Toledo FJ, J. Chem. Thermodyn., 36, 193 (2004)
Ortega J, Espiau F, Dieppa R, Fluid Phase Equilib., 215(2), 175 (2004)
Kehiaian HV, Bravo R, Barral MP, Paz Andrade MI, Guieu R, Fluid Phase Equilib., 17, 187 (1984)
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Avedis G, Grolier JPE, Fernandez J, Kehiaian HV, J. Solution Chem., 23, 135 (1994)
Maken S, Deshwal BR, Chadha R, Anu, Singh KC, Kim H, Park JW, Fluid Phase Equilib., 235(1), 42 (2005)
Singh PP, Maken S, Pure & Applied Chem., 66, 449 (1994)
Barker JA, Aust. J. Chem., 6, 207 (1953)
Riddick JA, Bunger WB, Sakano TK, Organic solvents, 4th Edn., Wiley/ Interscience, New York (1986)
Vogel AI, A text book of practical organic chemistry, 4th Edn., ELBS, Longman, London (1978)
Aralaguppi MI, Jadar CV, Aminabhavi TM, J. Chem. Eng. Data, 44, 441 (1999)
Kang JW, Yoo KP, Kim HY, Lee H, Yang DR, Lee CS, Korean Thermophysical Properties Data Bank (KDB), http://www.cheric.org/kdb/
George J, Sastry NV, J. Chem. Eng. Data, 48, 977 (2003)
Aminabhavi TN, Banerjee K, J. Chem. Eng. Data, 43, 1096 (1998)
Garriga R, Perez P, Gracia M, Fluid Phase Equilib., 216(2), 285 (2004)
Nayak JN, Aralaguppi MI, Aminabhavi TM, J. Chem. Eng. Data, 47, 964 (2002)
Bhardwaj U, Singh KC, Maken S, J. Chem. Thermodyn., 30(1), 109 (1998)
Marsh KN, Trans. Faraday Soc., 64, 883 (1968)
Nigam RK, Mahl BS, Indian J. Chem., 9, 1255 (1971)
Strubl K, Svoboda V, Holub R, Pick J, Collect Czech. Chem. Commun., 35, 3004 (1970)
Scatchard A, Ticknor LB, J. Am. Chem. Soc., 74, 3724 (1952)
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Spah DC, Verma PK, Singh KC, Kalra KC, Thermochim. Acta, 146, 187 (1989)
Singh PP, Nigam RK, Sharma V, Fluid Phase Equilib., 18, 313 (1984)
Singh PP, Bhatia M, Maken S, J. Soln. Chem., 20, 681 (1991)
