Chennuri, B.K. and Losetty, V. and Wilfred, C.D. and Gardas, R.L. (2017) Thermophysical properties of N-phenyl-N-ethanol ammonium carboxylate based ionic liquids: Measurements, correlations and COSMO-RS study. Journal of Molecular Liquids, 241. pp. 246-254. ISSN 01677322
Full text not available from this repository.Abstract
In this work, a series of four protic ionic liquids were synthesized by an exothermic neutralization process between N-phenyl-N-ethanolamine and stoichiometric quantity of different acids, namely, propionic acid, butyric acid, pentanoic acid and hexanoic acid. After characterization by 1H NMR and 13C NMR spectroscopic methods, density (�), speed of sound (u), viscosity (η) and conductivity (�) of neat ionic liquids have been measured 293.15 to 343.15 K and the refractive index (nD) was measured only at 303.15 K. The density and refractive index data were correlated by Gardas-Coutinho model and Lorentz-Lorenz mathematical equation, respectively, whereas viscosity and electrical conductivity were estimated by Vogel-Tammann-Fulcher (VTF) equation. Further experimental data used to calculate several derived thermodynamic properties such as thermal expansion coefficient (α), isentropic compressibility (βS), molar volume (Vm), standard entropy (S°), intermolecular free length (Lf), molar refraction (Rm) and free volume (fV). The decomposition temperature (Td) of synthesized ILs was investigated using TGA analysis. Finally, Conductor-like Screening Model for Real Solvents (COSMO-RS) computational method was also studied to understand the structural variations of the ionic liquids. © 2017 Elsevier B.V.
Item Type: | Article |
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Additional Information: | cited By 9 |
Uncontrolled Keywords: | Butyric acid; Carboxylation; Fatty acids; Ionic liquids; Liquids; Propionic acid; Refractive index; Saturated fatty acids; Spectroscopic analysis; Thermal expansion; Thermodynamic properties; Viscosity, Conductor-like screening model for real solvents; COSMO-RS; Decomposition temperature; Isentropic compressibility; Lorenz equation; Stoichiometric quantities; Thermal expansion coefficients; Vogel-Tammann-Fulcher equation, Density of liquids |
Depositing User: | Mr Ahmad Suhairi UTP |
Date Deposited: | 09 Nov 2023 16:20 |
Last Modified: | 09 Nov 2023 16:20 |
URI: | https://khub.utp.edu.my/scholars/id/eprint/8429 |