Liquid-Liquid equilibrium data, density, viscosity, and interfacial tension of ternary system (Toluene-Acetic Acid-Water) at 298.15 K: Experiment and correlation

Memari, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1021/acs.jced.7b00505
  3. Abstract:
  4. Liquid-liquid equilibrium (LLE) data, density, viscosity, and interfacial tension for the ternary system of toluene-acetic acid-water were measured at 298.15 K and 101.7 kPa. The Othmer-Tobias and the Hand correlations were used to check the reliability of the experimental tie-lines. Moreover, the distribution coefficient and the separation factor were explored. It was found from the experimental results that a maximum separation factor value happens at an acetic acid mass fraction of 0.02 in the organic phase. Density, viscosity, and interfacial tension were correlated using the appropriate correlations such that the predicted results have excellent agreement with the experimental data. The experimental data in this work and the literature were correlated using both the nonrandom two-liquid (NRTL) and the universal quasi chemical (UNIQUAC) activity coefficient models at various temperatures (288.2, 298.15, 303.15, and 313.15 K). The experimental results were used to obtain binary interaction parameters in these models. The root-mean-square deviation (RMSD) values for both models were less than 3.58%, and the model predictions show acceptable agreement with the measured data particularly at the plait point. © 2017 American Chemical Society
  5. Keywords:
  6. Acetic acid ; Liquids ; Organic acids ; PH ; Ternary systems ; Toluene ; Viscosity ; Activity coefficient model ; Binary interaction parameter ; Distribution coefficient ; Experiment and correlations ; Liquid liquid equilibrium ; Non random two liquids ; Root mean square deviations ; Universal quasi chemicals ; Phase equilibria
  7. Source: Journal of Chemical and Engineering Data ; Volume 62, Issue 12 , 2017 , Pages 4133-4143 ; 00219568 (ISSN)
  8. URL: https://pubs.acs.org/doi/abs/10.1021/acs.jced.7b00505?journalCode=jceaax