Abstract
The density (ρ), speed of sound (u) and refractive index (nD) for pure [Emim][EtSO4], 2-methoxyethanol and their binary mixtures were measured using an Anton Paar vibrating tube density and sound velocity meter (DSA 5000 M) and automatic refractometer over the whole composition range as a function of temperature between 298.15 and 328.15 K in steps of 10 K at atmospheric pressure. Experimental values were used to calculate the excess values of molar volumes (Vm E), partial molar volumes (V¯ m E), partial molar volumes at infinite dilution (V¯ m E, ∞), isentropic compressibility (κSE), acoustic impedance (ZE), free length (Lf E), speeds of sound (uE), internal pressure (πiE), free volume (Vf E) and deviations in refractive index (Δ ϕ nD) for the binary mixtures. These properties were fitted to a Redlich–Kister type equation to obtain the binary coefficients and the standard deviations. The negative values of Vm E, κSE, Lf E,αpE, and Vf E and positive values for ZE, uE,πiE, and Δ ϕ nD indicate the existence of strong interactions between the components. This was further supported by IR spectroscopy analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 675-701 |
| Number of pages | 27 |
| Journal | Journal of Solution Chemistry |
| Volume | 45 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - May 1 2016 |
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Keywords
- 2-Methoxyethanol
- Density
- Excess/deviation parameters
- Refractive index
- Speed of sound
- [Emim][EtSO]
ASJC Scopus subject areas
- Biophysics
- Biochemistry
- Molecular Biology
- Physical and Theoretical Chemistry
Cite this
Excess Thermodynamic Properties for Binary Mixtures of Ionic Liquid 1-Ethyl-3-methylimidazolium Ethyl Sulfate and 2-Methoxyethanol from T = (298.15 to 328.15) K at Atmospheric Pressure. / Reddy, M. Srinivasa; Raju, K. Thomas S.S.; Nayeem, Sk Md; Khan, Imran; Krishana, K. B.M.; Babu, B. Hari.
In: Journal of Solution Chemistry, Vol. 45, No. 5, 01.05.2016, p. 675-701.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Excess Thermodynamic Properties for Binary Mixtures of Ionic Liquid 1-Ethyl-3-methylimidazolium Ethyl Sulfate and 2-Methoxyethanol from T = (298.15 to 328.15) K at Atmospheric Pressure
AU - Reddy, M. Srinivasa
AU - Raju, K. Thomas S.S.
AU - Nayeem, Sk Md
AU - Khan, Imran
AU - Krishana, K. B.M.
AU - Babu, B. Hari
PY - 2016/5/1
Y1 - 2016/5/1
N2 - The density (ρ), speed of sound (u) and refractive index (nD) for pure [Emim][EtSO4], 2-methoxyethanol and their binary mixtures were measured using an Anton Paar vibrating tube density and sound velocity meter (DSA 5000 M) and automatic refractometer over the whole composition range as a function of temperature between 298.15 and 328.15 K in steps of 10 K at atmospheric pressure. Experimental values were used to calculate the excess values of molar volumes (Vm E), partial molar volumes (V¯ m E), partial molar volumes at infinite dilution (V¯ m E, ∞), isentropic compressibility (κSE), acoustic impedance (ZE), free length (Lf E), speeds of sound (uE), internal pressure (πiE), free volume (Vf E) and deviations in refractive index (Δ ϕ nD) for the binary mixtures. These properties were fitted to a Redlich–Kister type equation to obtain the binary coefficients and the standard deviations. The negative values of Vm E, κSE, Lf E,αpE, and Vf E and positive values for ZE, uE,πiE, and Δ ϕ nD indicate the existence of strong interactions between the components. This was further supported by IR spectroscopy analysis.
AB - The density (ρ), speed of sound (u) and refractive index (nD) for pure [Emim][EtSO4], 2-methoxyethanol and their binary mixtures were measured using an Anton Paar vibrating tube density and sound velocity meter (DSA 5000 M) and automatic refractometer over the whole composition range as a function of temperature between 298.15 and 328.15 K in steps of 10 K at atmospheric pressure. Experimental values were used to calculate the excess values of molar volumes (Vm E), partial molar volumes (V¯ m E), partial molar volumes at infinite dilution (V¯ m E, ∞), isentropic compressibility (κSE), acoustic impedance (ZE), free length (Lf E), speeds of sound (uE), internal pressure (πiE), free volume (Vf E) and deviations in refractive index (Δ ϕ nD) for the binary mixtures. These properties were fitted to a Redlich–Kister type equation to obtain the binary coefficients and the standard deviations. The negative values of Vm E, κSE, Lf E,αpE, and Vf E and positive values for ZE, uE,πiE, and Δ ϕ nD indicate the existence of strong interactions between the components. This was further supported by IR spectroscopy analysis.
KW - 2-Methoxyethanol
KW - Density
KW - Excess/deviation parameters
KW - Refractive index
KW - Speed of sound
KW - [Emim][EtSO]
UR - http://www.scopus.com/inward/record.url?scp=84964253178&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84964253178&partnerID=8YFLogxK
U2 - 10.1007/s10953-016-0465-y
DO - 10.1007/s10953-016-0465-y
M3 - Article
VL - 45
SP - 675
EP - 701
JO - Journal of Solution Chemistry
JF - Journal of Solution Chemistry
SN - 0095-9782
IS - 5
ER -