| 1-乙基-3-甲基咪唑磷酸二甲酯盐+K3PO4/K2HPO4/K2CO3+H2O离子液体双水相体系在T=298.15 K时相图数据的测量和相关性 |
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| 引用本文： | 王良,朱红,闫永胜.1-乙基-3-甲基咪唑磷酸二甲酯盐+K3PO4/K2HPO4/K2CO3+H2O离子液体双水相体系在T=298.15 K时相图数据的测量和相关性[J].化学学报,2012(6):707-713. |
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| 作者姓名： | 王良 朱红 闫永胜 |
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| 作者单位： | 吉林师范大学化学学院;环境友好材料制备与应用省部共建教育部重点实验室;江苏大学化学化工学院 |
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| 摘 要： | 实验测定了1-乙基-3-甲基咪唑磷酸二甲酯盐(1-ethyl-3-methylimidazolium dimehtyl phosphate,Emim]DMP)+盐(K3PO4,K2HPO4和K2CO3)+H2O体系在298.15 K的双节点数据.用3个经验方程与双节点数据关联,发现Merchuk方程简便并且准确性好.不同盐的分相能力顺序为K3PO4>K2HPO4>K2CO3,这与水合离子Gibbs自由能(ΔhydG)有关.用Othmer-Tobias方程、Bancroft方程和二元参数方程计算此方法和相应系线数据的可靠性.Emim]DMP是常见的离子液体,广泛用于萃取石油燃料中的硫.报道了Emim]DMP+盐+H2O体系的相图数据.
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| 关 键 词： | 相图数据 [Emim]DMP K3PO4/K2HPO4/K2CO3 离子液体双水相体系 |
Measurement and Correlation of the Phase Diagram Data for 1-Ethyl-3-methylimidazolium Dimethyl phosphate+K3PO4/K2HPO4/K2CO3+H2O lonic Liquids Aqueous Two-Phase Systems at T=298.15 K |
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| Institution: | Wang,Lianga,b Zhu,Honga,b Yan,Yongsheng,c(a Department of Chemistry,Jilin Normal University,Siping 136000)(b Key Laboratory of Preparation and Applications of Environmental Friendly Materials,Jilin Normal University,Ministry of Education,Siping 136000)(c Department of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013) |
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| Abstract: | Binodal data for the 1-ethyl-3-methylimidazolium dimethyl phosphate(DMP)+salt(K3PO4,K2HPO4,and K2CO3)+H2O systems were experimentally determined at 298.15 K.Three empirical equations were used to correlate binodal data.The Merchuk equation is an uncomplicated one for fine accu-racy.The ability of different salts studied for phase separation are in the order of K3PO4>K2HPO4>K2CO3,which may be related to the Gibbs free energy of hydration of the ions(ΔhydG).The reliability of the calcula-tion method and the corresponding tie-line data was described by the Othmer-Tobias equation and Bancroft equation,as well as the two-parameter equation.DMP is a familiar ionic liquid,which is extensively used for extractive desulfurization of fuel oils.This is the first time to report the data for phase diagrams of DMP+salt+water systems. |
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| Keywords: | phase diagram data DMP K3PO4/K2HPO4/K2CO3 ionic liquids aqueous two-phase systems |
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