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Ali Ghanadzadeh Gilani,Hossein Ghanadzadeh Gilani,Seyedeh Laleh Seyed Saadat,Elham Nasiri-Touli,Mahrokh Peer 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.4
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.