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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.
The effects of 1-ethyl-3-methylimidazolium dimehtyl phosphate ([Emim] DMP) + salts (K3PO4, K2HPO4 and K2CO3) Two-node data.The Merchuk equation was found to be simple and accurate with three empirical equations associated with two-node data.The order of phase separation of different salts was K3PO4> K2HPO4> K2CO3, which was related to Gibbs free energy (ΔhydG) of hydrated ions. The reliability of this method and the corresponding line data is calculated using the Othmer-Tobias equation, the Bancroft equation and the binary parameter equation. [Emim] DMP is a common ionic liquid and is widely used to extract sulfur in petroleum fuels. [Emim] DMP + salt + H2O system phase diagram data.