Ternary Excess Molar Volumes of {Methyltrioctylammonium Bis[(trifluoromethyl)sulfonyl]imide + Methanol + Methyl Acetate or Ethyl Acetate} Systems at (298.15, 303.15, and 313.15) K

• Published in: Journal of chemical and engineering data Vol. 55; no. 7; pp. 2636 - 2642
• Main Authors: Deenadayalu, N, Bahadur, I, Hofman, T
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 08-07-2010
• Subjects: Chemical thermodynamics; Chemistry; Exact sciences and technology; General and physical chemistry; Mixtures; Thermodynamic properties; Ternary system; Molar volume; Alcohol; Excess parameter; Methyl acetate; Thermodynamic properties; Density; Methanol
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/je900906j

The densities of the ternary systems {methyltrioctylammonium bis[(trifluoromethyl)sulfonyl]imide + methanol + methyl acetate or ethyl acetate} have been measured at the temperatures (298.15, 303.15, and 313.15) K. The ternary excess molar volumes,V 123 E, were calculated from the experimental densities at each temperature. The V 123 Evalues are negative for all mole fractions of the ionic liquid (IL). For the system {[MOA]+[Tf2N]− + methanol + methyl acetate}, the minimum ternary excess molar volumes, V 123,min E, decrease with decreasing z values (increasing the mole fraction of the IL) except at z equal to 0.30 at temperatures (298.15 and 313.15) K. The V 123,min Edecreases with an increase in the temperature. For the system {[MOA]+[Tf2N]− + methanol + ethyl acetate}, V 123,min E increases with decreasing z values at each temperature. The Cibulka equation was used to correlate the ternary excess molar volume data from the Redlich−Kister parameters obtained from fitting the Redlich−Kister equation to the five binary systems obtained from the literature. There is a good correlation between the Cibulka equation and experimental V 123 Edata.