TY - JOUR
T1 - Influence of anion on thermophysical properties of ionic liquids with polar solvent
AU - Govinda, Varadhi
AU - Reddy, P. Madhusudhana
AU - Attri, Pankaj
AU - Venkatesu, P.
AU - Venkateswarlu, P.
N1 - Funding Information:
We gratefully acknowledge University Grants Commission (UGC), New Delhi, Department of Science and Technology (DST), New Delhi, India (Grant No. SR/SI/PC-54/2008) and Council of Scientific Industrial Research (CSIR), New Delhi, Grant No. 01(2343)/09/EMRII for financial support.
PY - 2013
Y1 - 2013
N2 - In this work, we have reported a series of ionic liquids (ILs) involving a common cation trimethyl ammonium, ([(CH3)3NH] +), with generally used anions (acetate, [CH3COO] -, sulfate, [HSO4]-, phosphate, [H 2PO4]-). To address the molecular interactions between the relatively new class of solvents such as trimethylammonium acetate [(CH3)3NH+] [CH3COO-] (TMAA), trimethylammonium hydrogen sulfate [(CH3)3NH +][HSO4-] (TMAS), and trimethylammonium dihydrogen phosphate [(CH3)3NH+][H 2PO4-] (TMAP), with the polar solvent, dimethylsulfoxide (DMSO), the density (ρ), speed of sound (u) and viscosity (η) values have been measured over complete concentration range and wide temperature range from 298.15 K to 313.15 K in steps of 5 K under ambient pressure. By using these experimental results, excess volumes (VE), isentropic compressibility deviations (Δκs) and viscosity deviations (Δη) were obtained for all these binary systems at all experimental temperatures. The results are correlated by the Redlich-Kister type function to derive the coefficients and estimate the standard error. Further, the results for observed anion dependent phenomena and temperature influence on measured and derived properties are also discussed.
AB - In this work, we have reported a series of ionic liquids (ILs) involving a common cation trimethyl ammonium, ([(CH3)3NH] +), with generally used anions (acetate, [CH3COO] -, sulfate, [HSO4]-, phosphate, [H 2PO4]-). To address the molecular interactions between the relatively new class of solvents such as trimethylammonium acetate [(CH3)3NH+] [CH3COO-] (TMAA), trimethylammonium hydrogen sulfate [(CH3)3NH +][HSO4-] (TMAS), and trimethylammonium dihydrogen phosphate [(CH3)3NH+][H 2PO4-] (TMAP), with the polar solvent, dimethylsulfoxide (DMSO), the density (ρ), speed of sound (u) and viscosity (η) values have been measured over complete concentration range and wide temperature range from 298.15 K to 313.15 K in steps of 5 K under ambient pressure. By using these experimental results, excess volumes (VE), isentropic compressibility deviations (Δκs) and viscosity deviations (Δη) were obtained for all these binary systems at all experimental temperatures. The results are correlated by the Redlich-Kister type function to derive the coefficients and estimate the standard error. Further, the results for observed anion dependent phenomena and temperature influence on measured and derived properties are also discussed.
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U2 - 10.1016/j.jct.2012.11.014
DO - 10.1016/j.jct.2012.11.014
M3 - Article
AN - SCOPUS:84871749870
SN - 0021-9614
VL - 58
SP - 269
EP - 278
JO - Journal of Chemical Thermodynamics
JF - Journal of Chemical Thermodynamics
ER -