The activity coefficient at infinite dilution for 47 selected organic solutes in 1-allyl-3-methylimidazolium chloride ([AMIM]Cl) ionic liquid (IL) was determined at 303.15 K to 343.15 K through inverse gas chromatography (IGC). The partial molar excess enthalpy, entropy, Gibbs free energy at infinite dilution, and Hildebrand solubility parameters were obtained from the values of activity coefficient at infinite dilution. The selectivity and capacity of heptane/thiophene, heptane/benzene and benzene/thiophene separation problems were also calculated based on the activity coefficient at infinite dilution values. The selectivity of three separation problems of [AMIM]Cl was 85.36, 30.65 and 2.79, which indicated that [AMIM]Cl is an ideal solvent for the separation of heptane/thiophene.

中文翻译：

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分离过程中分子相互作用选择性的无限稀释活性系数研究

47 种选定有机溶质在 1-烯丙基-3-甲基咪唑鎓氯化物 ([AMIM]Cl) 离子液体 (IL) 中无限稀释时的活度系数通过反相气相色谱 (IGC) 在 303.15 K 至 343.15 K 下测定。部分摩尔过量焓、熵、无限稀释时的吉布斯自由能和希尔德布兰德溶解度参数由无限稀释时的活度系数值获得。庚烷/噻吩、庚烷/苯和苯/噻吩分离问题的选择性和容量也基于无限稀释值下的活性系数进行计算。[AMIM]Cl三个分离题的选择性分别为85.36、30.65和2.79，表明[AMIM]Cl是分离庚烷/噻吩的理想溶剂。