Phase Diagrams for the Aqueous Solutions of Carboxylic Acid with Dipropyl Ether: Experimental and Correlated Data


Ozmen D. , Bekri S.

IRANIAN JOURNAL OF CHEMISTRY & CHEMICAL ENGINEERING-INTERNATIONAL ENGLISH EDITION, cilt.39, sa.6, ss.173-183, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 39 Konu: 6
  • Basım Tarihi: 2020
  • Doi Numarası: 10.30492/ijcce.2019.36137
  • Dergi Adı: IRANIAN JOURNAL OF CHEMISTRY & CHEMICAL ENGINEERING-INTERNATIONAL ENGLISH EDITION
  • Sayfa Sayıları: ss.173-183

Özet

In this research, liquid-liquid equilibrium (LLE) data were experimentally obtained for the ternary systems of (water + carboxylic acid + dipropyl ether) at T = 298.2 K and P = 101.3 kPa. The carboxylic acids used in this study were isobutyric acid, valeric acid, and isovaleric acid. All these systems are according to Treybal classification, Type-2 systems because the two binary subsystems are partially miscible. The lowest distribution coefficients and separation factors were calculated for isobutyric acid (40 and 329, respectively). The authenticity of the experimental equilibrium data was identified from Hand and Othmer-Tobias correlations. The experimental tie-line data were correlated by using the nonrandom two-liquid (NRTL) and universal quasi-chemical (UNIQUAC) activity coefficient models. RAM values are between 0.0112 and 0.0155 for NRTL model and are between 0.0083 and 0.0153 for UNIQUAC model.