Density and excess molar volume of the protic ionic liquid bis(2-hydroxyethyl)ammonium acetate with alcohols
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 expansio...
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| Main Authors: | , , , |
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| Format: | Citation Index Journal |
| Language: | English |
| Published: |
Springer
2011
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| Subjects: | |
| Online Access: | http://scholars.utp.edu.my/id/eprint/6630/1/JSC-2011.pdf http://scholars.utp.edu.my/id/eprint/6630/ |
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| Institution: | Universiti Teknologi Petronas |
| Language: | English |
| Summary: | 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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