Density and Excess Molar Volume of the Protic Ionic Liquid Bis(2-hydroxyethyl)ammonium Acetate with Alcohols
Abstract Densities were determined for binary mixtures containing the protic ionic liquid bis(2-hydroxyethyl)ammonium acetate [BHEAA] and an alcohol (methanol, ethanol, and 1- propanol) at four different temperatures (293.15, 303.15, 313.15, and 323.15) K and ambient pressure. Coefficients of the...
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Main Authors: | , , , |
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Format: | Citation Index Journal |
Published: |
Springer
2011
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Subjects: | |
Online Access: | http://eprints.utp.edu.my/5416/1/JSC-2011.pdf http://eprints.utp.edu.my/5416/ |
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Summary: | Abstract Densities were determined for binary mixtures containing the protic ionic liquid
bis(2-hydroxyethyl)ammonium acetate [BHEAA] and an alcohol (methanol, ethanol, and 1-
propanol) at four different temperatures (293.15, 303.15, 313.15, and 323.15) K and ambient
pressure. Coefficients of thermal expansion and excess molar volumes were calculated from
the experimental densities. The excess molar volumes were fitted using the Redlich-Kister
polynomial equation. Negative deviations from ideal behavior of the excess molar volume
were observed for all systems investigated in this study. The results were interpreted in
terms of ion-dipole interactions and structural factors of the ionic liquid and alcohol. It was
observed that an increase of the alcohol carbon chain length led to lower interactions on
mixing. |
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