Liquid-Liquid Equilibria of Oxygenate Fuel Additives with Water at 298.15 K:Ternary and Quaternary Aqueous Systems of Diisopropyl Ether and Hydrocarbons with 2-Propanol

摘要

Experimental tie-line data were determined for one ternary system,water + diisopropyl ether + n-heptane and two quaternary systems,water + diisopropyl ether + 2-propanol + n-heptane or toluene at 298.15 K and ambient pressure.The experimental liquid-liquid equilibrium data were successfully correlated using a modified UNIQUAC model with ternary and quaternary mixture parameters,in addition to the binary ones.The calculated results were also compared with those obtained from an extended UNIQUAC model of Nagata [Fluid Phase Equilib.54,191 (1990)].