(Liquid plus liquid) equilibria of (water plus butyric acid plus esters) ternary systems


Kirbaslar S. I., Sahin S., Bilgin M.

JOURNAL OF CHEMICAL THERMODYNAMICS, vol.39, no.9, pp.1279-1285, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 9
  • Publication Date: 2007
  • Doi Number: 10.1016/j.jct.2007.01.013
  • Journal Name: JOURNAL OF CHEMICAL THERMODYNAMICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1279-1285
  • Istanbul University Affiliated: Yes

Abstract

(Liquid + liquid) equilibrium (LLE) data of the solubility (binodal) curves and tie-line end compositions were examined for mixtures of {water (1)+butyric acid (2) + ethyl propionate or dimethyl phthalate or dibutyl plithalate (3)} at T=298.15K and (101.3 +/- 0.7) kPa. The relative mutual solubility of the butyric acid is higher in the layers of esters than in the aqueous layer. The reliability of the experimental tie-line data was confirmed by using the Othmer-Tobias correlation. The LLE data of the ternary systems were predicted by UNIFAC method. Distribution coefficients and separation factors were evaluated for the immiscibility region. (c) 2007 Elsevier Ltd. All rights reserved.