Influence of the temperature on the equilibrium phase diagram of the ternary system water + ammonium chloride + 2-propanol at 101.3 kPa

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Title: Influence of the temperature on the equilibrium phase diagram of the ternary system water + ammonium chloride + 2-propanol at 101.3 kPa
Authors: Gomis, Alejandro | Garcia-Cano, Jorge | Font, Alicia | Gomis Yagües, Vicente
Research Group/s: Equilibrio entre Fases
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química | Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos
Keywords: Water | 2-Propanol | NH4Cl | Isobaric | Solid-liquid-liquid | Solid-liquid-liquid-vapor | Phase diagram
Knowledge Area: Ingeniería Química
Issue Date: Apr-2019
Publisher: Elsevier
Citation: The Journal of Chemical Thermodynamics. 2019, 131: 33-39. doi:10.1016/j.jct.2018.10.022
Abstract: The phase equilibrium of the water + NH4Cl + 2-propanol mixture, at a constant pressure of 101.3 kPa, has been determined isothermally at four temperatures, as well as at the boiling temperature. Transitions between the different regions of the isothermal equilibrium diagrams have been studied, and the lowest temperature at which the salt can split water + 2-propanol mixtures into two liquid phases, is found to be 310.1 K. As the temperature is increased from this critical value, the two-liquid-phase region expands until the boiling temperature is reached. Finally, the extended UNIQUAC model for electrolytes has been used to predict the equilibrium diagram of the system. Large discrepancies with the experimental results have been found, and it will, therefore, be necessary to review the parameters of the model based on the experimental data reported in this work.
Sponsor: We would like to thank the DGICYT of Spain for the financial support of project CTQ2014-59496.
ISSN: 0021-9614 (Print) | 1096-3626 (Online)
DOI: 10.1016/j.jct.2018.10.022
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2018 Elsevier Ltd.
Peer Review: si
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Appears in Collections:INV - EQF - Artículos de Revistas

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