本研究利用總壓法完成五種離子液體水溶液雙成分系統: water + choline glycolate、water + diethylmethylammoniummethane sulfonate、water + 1-ethyl-3-methylimidazolium acetate、water + 1-ethyl-3-methylimidazolium diethylphosphate、water + tetrabutylammorimum 2-(bis(2-hydroxyethyl)amino)acetic acid恆溫下的汽液相平衡數據量測，溫度介於278.2 K ~ 413.2 K之間，每一雙成分系統均呈負偏差。本實驗所測得之汽液相平衡數據以UNIQUAC模式關聯，模式結果獲得令人滿意的結果。此熱力學模式與最適化參數值也被用於估算每一雙成分系統之過剩Gibbs自由能，過剩熱焓，以及過剩熵。

In the present study, the total pressure method was used to measure isothermal vapor-liquid equilibrium (VLE) data for the binary systems of water + choline glycolate , water + diethylmethylammoniummethane sulfonate , water + 1-ethyl-3-methylimidazolium acetate , water + 1-ethyl-3-methylimidazolium diethylphosphate , and water + tetrabutylammorimum 2-(bis(2-hydroxyethyl)amino)acetic acid at 278.2 K to 413.2 K. The experimental results show that all binary systems are negative deviations. The UNIQUAC model was applied used to correlate the VLE data for each binary system. The correlated results are satisfactory. The thermodynamic model with the determined optimal parameters was also employed to calculate excess Gibbs free energies, excess enthalpies, and excess entropies for each investigated binary system.

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