scholarly journals Reference materials for phase equilibrium studies. 1. Liquid–liquid equilibria (IUPAC Technical Report)

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ala Bazyleva ◽  
William E. Acree ◽  
Robert D. Chirico ◽  
Vladimir Diky ◽  
Glenn T. Hefter ◽  
...  
Keyword(s):  
Phase Equilibrium ◽  
Reference Materials ◽  
Property Values ◽  
Aqueous Systems ◽  
Liquid Equilibrium ◽  
Equilibrium Studies ◽  
Data Smoothing ◽  
Technical Report ◽  
Instruments And Techniques ◽  
Low Solubility

Abstract This article is the first of three projected IUPAC Technical Reports resulting from IUPAC Project 2011-037-2-100 (Reference Materials for Phase Equilibrium Studies). The goal of this project is to select reference systems with critically evaluated property values for the validation of instruments and techniques used in phase equilibrium studies of mixtures. This report proposes seven systems for liquid–liquid equilibrium studies, covering the four most common categories of binary mixtures: aqueous systems of moderate solubility, non-aqueous systems, systems with low solubility, and systems with ionic liquids. For each system, the available literature sources, accepted data, smoothing equations, and estimated uncertainties are given.

Thermodynamic and thermophysical properties of the reference ionic liquid: 1-Hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]amide (including mixtures). Part 2. Critical evaluation and recommended property values (IUPAC Technical Report)

2009 ◽  
Vol 81 (5) ◽  
pp. 791-828 ◽  
Author(s):  
Robert D. Chirico ◽  
Vladimir Diky ◽  
Joseph W. Magee ◽  
Michael Frenkel ◽  
Kenneth N. Marsh
Keyword(s):  
Ionic Liquid ◽  
Property Values ◽  
Reference Sample ◽  
Critical Evaluation ◽  
Liquid Mixtures ◽  
Liquid Equilibrium ◽  
Equilibrium Studies ◽  
Technical Report ◽  
Gas Solubilities ◽  
Triple Point Temperature

This article is a product of IUPAC Project 2002-005-1-100 (Thermodynamics of ionic liquids, ionic liquid mixtures, and the development of standardized systems). Experimental results of thermodynamic, transport, and phase equilibrium studies made on a reference sample of the ionic liquid 1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]amide are summarized, compared, and critically evaluated to provide recommended values with uncertainties for the properties measured. Properties measured included thermal properties (triple-point temperature, glass-transition temperature, enthalpy of fusion, heat capacities of condensed states), volumetric properties, speeds of sound, viscosities, electrolytic conductivities, relative permittivities, as well as properties for mixtures, such as gas solubilities (solubility pressures), solute activity coefficients at infinite dilution, and liquid-liquid equilibrium temperatures. Recommended values with uncertainties are provided for the properties studied experimentally. The effect of the presence of water on the property values is discussed.

Static vapour-liquid equilibrium studies on {xC3H7NH2 + (1−x)C3H7OH}

1981 ◽  
Vol 13 (6) ◽  
pp. 557-562 ◽  
Author(s):  
E. Kristóf ◽  
I. Ország ◽  
F. Ratkovics
Keyword(s):  
Liquid Equilibrium ◽  
Equilibrium Studies

High-Pressure Phase Equilibrium Studies of Multicomponent (Alcohol-Water-Ionic Liquid-CO2) Systems

2020 ◽  
Vol 6 (1) ◽  
pp. 9
Author(s):  
Małgorzata E. Zakrzewska ◽  
Ana B. Paninho ◽  
M. Fátima C. Guedes da Silva ◽  
Ana V. M. Nunes
Keyword(s):  
High Pressure ◽  
Ionic Liquid ◽  
Phase Equilibrium ◽  
Process Intensification ◽  
High Pressure Phase ◽  
Equilibrium Studies ◽  
Water Separation ◽  
Alcohol Water ◽  
Product Separation ◽  
Pressure Phase

Selective water (by-product) separation from reaction mixtures stands as an important process intensification strategy for equilibrium-limited reactions. In this work, the possibility of using a high-pressure biphasic reaction media composed of a hydrophobic ionic liquid, 1-hexy-3-methylimidazolium tetracyanoborate, and carbon dioxide was explored for levulinic acid production from 1,4-butanediol. Vapour-liquid equilibrium measurements were performed for the binary (diol+CO2), ternary (diol+CO2+IL), and quaternary systems (diol+CO2+IL+water), at 313.2 K and pressures up to 18 MPa. The static analytical method was used in a high-pressure phase equilibrium apparatus equipped with a visual sapphire cell. The capability of the quaternary system to perform physical water separation is discussed in this paper.

Phase Equilibrium Studies of Lithium Halide-Containing Electrolytes

1969 ◽  
Vol 116 (11) ◽  
pp. 1612 ◽  
Author(s):  
Carl E. Johnson ◽  
Melvin S. Foster
Keyword(s):  
Phase Equilibrium ◽  
Equilibrium Studies
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