Thermophysical Properties of Acetone or Methanol + n-Alkane (C₉ to C₁₂) Mixtures

Abstract

Liquid-liquid equilibria for methanol + n-alkanes (C 9 to C 12 ) were determined in the temperature range (278.15 to 308.15 K), using a visual static method. Densities, refractive indices, and speeds of sound were also measured at 288.15, 298.15, and 308.15 K for acetone + n-alkane mixtures and at 298.15 and 308.15 K for methanol + n-alkane mixtures to study the temperature influence on mixing phenomena. The results were used to model liquid-liquid coexistence and derived properties trend. The calculated values based on the UNIQUAC equation were found to be similar to those based on the NRTL model. The Prigogine-Flory-Paterson theory was applied to estimate the excess molar volumes and the UNIFAC group contribution model for phase equilibria.

Liquid–liquid equilibria for mixtures of {methyl acetate+methanol+n-alkane (C10–C12)} at several temperatures and 1 atm

“…The liquid-liquid equilibria data for the binary systems (methanol + n-alkane) have been previously published [7]. As expected, the size of the two-phase region decreases with an increase in temperature.…”

“…This fact could be more clearly observed by the predicted immiscibility by the non-symmetric tendency towards the (methyl acetate + n-alkane) linear mixture, which estimates the liquid-liquid equilibria for these binary mixtures at low temperatures. On the contrary, these binary mixtures show a homogeneous experimental trend over the whole range of temperatures [7].…”

Excess properties of the binary mixtures of methylcyclohexane+alkanes (C6 to C12) at T=298.15K to T=308.15K

“…Aminabhavi and co-workers [1][2][3][4][5][6] have studied molecular interactions and thermodynamic properties of several binary mixtures of different types of liquids as first components with n-alkanes as the second component. Binary mixtures containing different alkanes with a variety of organic liquids, have been extensively studied by different authors [7][8][9][10][11][12][13][14], with respect to different properties. Different excess properties of binary mixtures containing methylcyclohexane as one of the components with a variety of liquids have also been studied by a large number of researchers [15][16][17][18][19][20][21][22].…”

Changes of refractive indices of the ternary mixtures chlorobenzene +n-hexane + (n-nonane orn-decane) at 298.15 K

“…So, the design of an effective remediation strategy for the contamination of air, ground, and surface water with halogenated aromatic compounds of different nature, physical, chemical, and biodegradation potential of each contaminant must be researched. we have conducted in the last few years systematic studies on the thermodynamic properties of mixtures related to industrial processes [1][2][3][4], food technology [5,6], or pharmacological mixtures [7,8].…”