Volumetric Properties and Refractive Indices for Binary Mixtures of 1-Propyronitrile-3-hexylimidazolium Bromide + Ethanol at Temperatures from 293.15 to 323.15 K |
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Authors: | Malyanah M Taib Abobakr K Ziyada Cecilia Devi Wilfred Thanapalan Murugesan |
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Institution: | (1) Chemical Engineering Department, Universiti Teknologi PETRONAS, Tronoh, Perak, Malaysia;(2) Department of Fundamental & Applied Science, Universiti Teknologi PETRONAS, Tronoh, Perak, Malaysia; |
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Abstract: | Densities and refractive indices have been measured for binary mixtures of 1-propyronitrile-3-hexylimidazolium bromide + ethanol
in the temperature range 293.15–323.15 K. From the experimental data the excess molar volume V
E, refractive index deviation Δn
D, and the coefficient of thermal expansion α were calculated and fitted to fifth- and third-order Redlich–Kister type equations, respectively. Using the measured densities,
the apparent molar volumes (V
ϕ
), limiting apparent molar volumes (Vf0V_{\phi}^{0}) and limiting apparent molar expansivities (Ef 0E_{\phi} ^{0}) were also determined and the details are discussed. |
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Keywords: | |
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