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The phase equilibrium of the quaternary system Na+, NH4+//Cl−, H2PO4−–H2O at 298.15K and 323.15K is investigated by the isothermal solution saturation method. The densities of the saturation solution were obtained. The phase diagrams, water content diagrams and density–composition diagrams were constructed. The phase diagrams of the system contain four ternary invariant points, two quaternary invariant...
In this paper, the liquid–liquid equilibrium (LLE) and tie-line data of the system containing 1-butanol+water+tri-n-butyl phosphate (TBP)+ammonium chloride have been studied at 298.15, 308.15 and 318.15K under atmospheric pressure. The influence of temperature and different concentrations of ammonium chloride have been investigated. In addition, nonrandom two-liquid (NRTL) model is applied to the...
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