Densities, Viscosities and Excess Properties of BinaryMixtures of 1,1,3,3-Tetramethylguanidinium Lactate + Water at T= (303.15 to 328.15) K.
In: Journal of Chemical & Engineering Data, Jg. 58 (2013-07-11), Heft 7, S. 1885-1892
academicJournal
Zugriff:
Densities and viscosities of 1,1,3,3-tetramethylguanidiumlactate([TMG]L) (1) + H2O (2) with different compositions weredetermined at temperatures from (303.15 to 328.15) K. Densities of[TMG]L (1) + H2O (2) decrease with the increase of temperature.However, when the mole fraction of water is lower than 0.5, the watercontent does not have an obvious influence on the density of [TMG]L.When the mole fraction of water is greater than 0.5, the densitiesof [TMG]L (1) + H2O (2) decrease obviously with furtherincreasing the mole fraction of water. Viscosity of [TMG]L decreasedramatically with the increase of temperature and the water content.Excess molar volumes (VE) and viscositydeviations (Δη) of the binary mixtures were calculatedby the experimental data and fitted to the Redlich–Kister equationwith four parameters. The result shows that the values of VEand Δη for the binary mixturesare negative over the whole composition range and temperatures from(303.15 to 328.15) K. The negative of the excess properties indicatesa strong interaction between the ionic liquid and water. The partialmolar volumes (V̅i), excess partial molar volumes (V̅iE), Gibbs energy of activation for viscous flow (ΔG*), and excess Gibbs energy of activation for viscous flow (ΔG*E) of the binary mixtures were also calculatedbased on the densities and viscosities data. Besides, the Jouyban–Acreemodel was used to correlate the densities and viscosities of the binarymixtures with respect to the mixture composition and temperature simultaneously. [ABSTRACT FROM AUTHOR]
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Densities, Viscosities and Excess Properties of BinaryMixtures of 1,1,3,3-Tetramethylguanidinium Lactate + Water at T= (303.15 to 328.15) K.
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Autor/in / Beteiligte Person: | Tian, Shidong ; Ren, Shuhang ; Hou, Yucui ; Wu, Weize ; Peng, Wei |
Zeitschrift: | Journal of Chemical & Engineering Data, Jg. 58 (2013-07-11), Heft 7, S. 1885-1892 |
Veröffentlichung: | 2013 |
Medientyp: | academicJournal |
ISSN: | 0021-9568 (print) |
DOI: | 10.1021/je3009073 |
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