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首页> 外文期刊>Journal of Chemical and Engineering Data: the ACS Journal for Data >Activity Coefficients at Infinite Dilution of Organic Solutes and Water in Tributylethylphosphonium Diethylphosphate Using Gas-Liquid Chromatography: Thermodynamic Properties of Mixtures Containing Ionic Liquids
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Activity Coefficients at Infinite Dilution of Organic Solutes and Water in Tributylethylphosphonium Diethylphosphate Using Gas-Liquid Chromatography: Thermodynamic Properties of Mixtures Containing Ionic Liquids

机译：气相色谱法在三丁基乙基phosphate二乙基磷酸phosphate中的有机溶质和水无限稀释时的活度系数：含离子液体的混合物的热力学性质

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In this work, new set of experimental activity coefficients at infinite dilution, gamma(infinity)(13) for 51 various organic solutes such as alkanes, 1-alkenes, 1-alkynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, acetonitrile, pyridine, 1-nitropropane, and water in tributylethylphosphonium diethylphosphate, [P-2,P-4,P-4,P-4][DEP] have been measured in temperature range T = (328.15 to 368.15) K by gas-liquid chromatography, GLC. From experimental data the partial molar excess Gibbs free energies Delta G(1)(E,infinity), enthalpies Delta H-1(E,infinity), and entropies T-ref Delta S-1(E,infinity) at infinite dilution were calculated. Additionally the gas-liquid partition coefficients, K-L, were determined. Moreover, capabilities of the studied ionic liquid in several liquid-liquid extraction processes are evaluated by selectivity and capacity at infinite dilution. These parameters were compared to the values from the recent literature for other ionic liquids with phosphonium cation or diethylphosphate anion. Additionally, basic thermophysical characterization of pure [P(2,4,4,)4][DEP] including: glass transition temperature To as well as the heat capacity at the glass-transition temperature Delta C-p(g),C-1 were determined using differential scanning microcalorimetry technique, DSC. Moreover, ambient pressure liquid density of pure IL is determined in temperature range T = (298.15 to 368.15) K.
机译：在这项工作中，在51种各种有机溶质（如烷烃，1-烯烃，1-炔烃，环烷烃，芳烃，醇，噻吩，醚，酮）中无限稀释的新实验活性系数，γ（无穷大）（13） ，在温度范围T =（328.15至368.15）K的条件下，测定了三乙基乙基磷酸二乙酯磷酸[P-2，P-4，P-4，P-4] [DEP]中的乙腈，吡啶，1-硝基丙烷和水气液色谱法，GLC。从实验数据来看，无限稀释时部分摩尔过量的吉布斯自由能Delta G（1）（E，infinity），焓Delta H-1（E，infinity）和熵T-ref Delta S-1（E，infinity）为计算。另外，确定了气液分配系数K-L。此外，通过无限稀释下的选择性和容量来评估所研究的离子液体在几种液-液萃取过程中的能力。将这些参数与最新文献中含with阳离子或磷酸二乙酯阴离子的其他离子液体的值进行比较。此外，纯的[P（2,4,4，）4] [DEP]的基本热物理特征包括：玻璃化转变温度To以及玻璃化转变温度Delta Cp（g），C-1的热容。用差示扫描量热法DSC测定。此外，在温度范围T =（298.15至368.15）K下确定纯IL的环境压力液体密度。

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