(Liquid plus liquid) equilibria of (water plus propionic acid plus diethyl succinate or diethyl glutarate or diethyl adipate) ternary systems

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

JOURNAL OF CHEMICAL THERMODYNAMICS, vol.39, no.11, pp.1463-1469, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 11
  • Publication Date: 2007
  • Doi Number: 10.1016/j.jct.2007.03.004
  • Journal Name: JOURNAL OF CHEMICAL THERMODYNAMICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1463-1469
  • Istanbul University Affiliated: Yes

Abstract

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