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Received March 21, 2009
Accepted May 15, 2009
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High-pressure vapor-liquid equilibrium measurement for the binary mixtures of carbon dioxide+n-butanol
Department of Chemical and Biomolecular Engineering, Sogang University, Sinsu-dong, Mapo-gu, Seoul 121-742, Korea 1Department of Chemical Engineering, University of Daejin, Pocheon 487-711, Korea
Korean Journal of Chemical Engineering, November 2009, 26(6), 1754-1758(5), 10.1007/s11814-009-0281-9
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Abstract
High-pressure vapor-liquid equilibrium data for the binary mixtures of CO2+n-butanol were measured at various isotherms of (313.15, 323.15, 333.15 and 343.15) K, respectively. The equilibrium compositions of vapor and liquid phases and pressures at each temperature were measured in a circulation-type equilibrium apparatus. To facilitate easy equilibration, both vapor and liquid phases were circulated separately in the experimental apparatus and the equilibrium_x000D_
composition was analyzed by an on-line gas chromatograph. The experimental data were compared with literature results and correlated with the Peng-Robinson (PR) equations of state using the Wong-Sandler mixing rules. Calculated results with the PR EOS showed good agreement with our experimental data.
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References
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McHugh MA, Krukonis VJ, Supercritical fluid extraction, Butterworth-Heinemann, Stoneham (1994)
Ishihara K, Tsukajima A, Tanaka H, Kato M, Sako T, Sato M, Hakuta T, J. Chem. Eng. Data, 41, 324 (1994)
Hiaki T, Miyagi H, Tsuji T, Hongo M, J. Supercrit. Fluids, 13(1), 23 (1998)
Jennings DW, Lee RJ, Teja ASJ, J. Chem. Eng. Data, 36, 303 (1991)
Elizalde-Solis O, Galicia-Luna LA, Camacho-Camacho LE, Fluid Phase Equilib., 259(1), 23 (2007)
Stevens RMM, Shen XM, deLoos TW, Arons JD, J. Supercrit. Fluids, 11(1), 1 (1997)
Peng DY, Robinson DB, Ind. Eng. Chem. Fundam., 15, 59 (1976)
Wong DSH, Sandler SI, AIChE J., 38, 671 (1992)
Lim JS, Jin JM, Yoo KP, J. Supercrit. Fluids, 44, 279 (2008)
Lim JS, Jung YG, Yoo KP, J. Chem. Eng. Data, 52, 5405 (2007)
Wong DSH, Orbey H, Sandler SI, Ind. Eng. Chem. Res., 31, 2033 (1992)
Renon H, Prausnitz JM, AIChE J., 14, 135 (1968)
McLinden MO, Klein SA, Lemmon EW, Peskin AP, Thermodynamic properties of refrigerants and refrigerant mixtures database (REFPROP), V.6.01, NIST (1998)
