Volumetric properties of ternary (IL + 2-propanol or 1-butanol or 2-butanol + ethyl acetate) systems and binary (IL + 2-propanol or 1-butanol or 2-butanol) and (1-butanol or 2-butanol + ethyl acetate) systems

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• 作者：Indra Bahadur^a ; Nirmala Deenadayalu^a ; ^{NirmalaD@dut.ac.za} ; Zikhona Tywabi^a ; Sabyasachi Sen^b ; Tadeusz Hofman^c
• 关键词：Density ; Excess molar volume ; Partial molar volume ; Ionic liquid ; Alkanols ; Binary/ternary mixtures
• 刊名：Journal of Chemical Thermodynamics
• 出版年：2012
• 期刊代码：123_00219614
• 类别：ch
• 出版时间：June, 2012
• 卷：49
• 期：Complete
• 页码：24-38
• 文件大小：502 K

摘要

The experimental densities for the binary or ternary systems were determined at T = (298.15, 303.15, and 313.15) K. The ionic liquid methyl trioctylammonium bis(trifluoromethylsulfonyl)imide ([MOA]⁺[Tf₂N]鈭?/sup>) was used for three of the five binary systems studied. The binary systems were ([MOA]⁺[Tf₂N]鈭?/sup> + 2-propanol or 1-butanol or 2-butanol) and (1-butanol or 2-butanol + ethyl acetate). The ternary systems were {methyl trioctylammonium bis(trifluoromethylsulfonyl)imide + 2-propanol or 1-butanol or 2-butanol + ethyl acetate}. The binary and ternary excess molar volumes for the above systems were calculated from the experimental density values for each temperature. The Redlich-Kister smoothing polynomial was fitted to the binary excess molar volume data. Virial-Based Mixing Rules were used to correlate the binary excess molar volume data. The binary excess molar volume results showed both negative and positive values over the entire composition range for all the temperatures.

The ternary excess molar volume data were successfully correlated with the Cibulka equation using the Redlich-Kister binary parameters.