Liquid-liquid equilibria for aliphatic alcohols + water + potassium carbonate systems; experiment and correlation

Authors: Salabat, Alireza; Hashemi, Mahmod

Source: Physics and Chemistry of Liquids, Volume 45, Number 2, April 2007 , pp. 231-239(9)

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Abstract:

Liquid-liquid equilibrium (LLE) data were measured at 298.15 K for some aliphatic alcohols + water + potassium carbonate systems. The alcohols used were ethanol, 1-propanol, 2-propanol and 2-methyl-2-propanol. The LLE data were correlated with the Othmer-Tobias and Bancroft equations. A calculated method was also proposed to correlate the experimental tie-line data. This method is based on the Wilson model for alcohol + water mixture, the Pitzer equation for electrolyte solution and an empirical equation for the binodal curves.

Keywords: Thermodynamic model; Two-phase system; Phase diagram; Aliphatic alcohols; Potassium carbonate

Document Type: Research article

DOI: http://dx.doi.org/10.1080/10683160500520502

Affiliations: 1: Chemistry Department, Arak University, Arak, Iran

Publication date: 2007-04-01