Liquid-liquid phase equilibrium (LLE) data were determined for the (water+propionic or butyric acid+1-heptanol) ternary systems at T=(298.15, 308.15, and 318.15) K and p=101.3 kPa. For both systems, a type-1 LLE phase diagram was obtained. The quality of the experimental LLE data was determined through the Othmer-Tobias and Bancroft equations. The experimental tie-lines were fitted using the UNIQUAC and NRTL correlation models. For the studied systems, a comparison was made between the experimental and correlated distribution coefficients and separation factors. The LSER model of Katritzky was applied to obtain the contributions of intermolecular interactions in these systems.
Taylor BN, Kuyatt CE, Guidelines for the evaluation and expression of uncertainty in NIST measurement results technical note 1297 for NIST. MD: Gaithersburg (1994).
Goral M, Gocłowska BW, Maczynski A, J. Phys. Chem. Ref Data, 35(3), 1391, 2006
Sorensen JM, Ph.D. Thesis, Technical University of Denmark, Lyngby, Denmark, 342 (1980).
Reichardt C, Solvents and Solvent Effects in Organic Chemistry, third Ed.,Wiley-VCH & Co, KGaA (2003).
Wohlfarth C, Springer Materials, Springer-Verlag Berlin Heidelberg (2008).
Lide DR, CRC Handbook of Chemistry and Physics, CRC Press, Boca Raton, FL (2005).
Torres RB, Pina CG, Francesconi AZ, J. Mol. Liq., 107, 127, 2003
TRC Thermodynamic Tables-Nonhydrocarbons, Thermodynamic Research Centre, NIST / TRC Table Database, Win Table (2004).