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Densities, Refractive Indices and Excess Molar Volumes for Binary Mixtures of Protic Ionic Liquids with Methanol at T = (293.15 to 313.15) K

Kiki, Adi Kurnia and Taib, Malyanah M and Abdul Mutalib, M I and T., Murugesan (2011) Densities, Refractive Indices and Excess Molar Volumes for Binary Mixtures of Protic Ionic Liquids with Methanol at T = (293.15 to 313.15) K. [Citation Index Journal]

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Abstract

Densities and refractive indices for the binary mixtures involving four different Protic Ionic Liquids (PILs) namely (2-Hydroxyethanaminium formate [HEF] + methanol), (2-Hydroxyethanaminium acetate [HEA] + methanol), (2-Hydroxyethanaminium propionate [HEP] + methanol), and (2-Hydroxyethanaminium lactate [HEL] + methanol) have been measured at the temperature range from (293.15 to 313.15) K and at atmospheric pressure. The excess molar volumes VE, refractive index deviations ΔnD for these binary mixtures were calculated and correlated using Redlich-Kister equation. The coefficients of thermal expansion α, were also calculated from these experimental data. The values of VE are negative for the entire mole fraction range covered for all these binary mixtures and increased with temperature, whereas the values of ΔnD are positive and also increased with temperature. The measured refractive indices were compared with those predicted using the Lorentz–Lorenz, Gladstone–Dale, and Eykman equations and a satisfactory agreement was found for all the binary systems (PILs + methanol) studied in the present work.

Item Type:Citation Index Journal
Subjects:T Technology > TP Chemical technology
Departments / MOR / COE:Departments > Chemical Engineering
ID Code:6629
Deposited By: Prof Dr Thanabalan Murugesan
Deposited On:21 Nov 2011 06:29
Last Modified:19 Jan 2017 08:23

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