Liquid-liquid equilibria of oxygenate fuel additives with water at 25°C: Ternary and quaternary aqueous systems of methyl tert-butyl ether and tert-amyl methyl ether with methanol or ethanol

Abstract

Experimental tie-line data have been determined for the ternary system water + methyl tert-butyl ether + tert-amyl methyl ether and the quaternary systems water + methanol + methyl tert-butyl ether + tert-amyl methyl ether, and water + ethanol + methyl tert-butyl ether + tert-amyl methyl ether at 25°C and ambient pressure. The experimental results have been satisfactorily correlated using the modified UNIQUAC and extended UNIQUAC models with ternary and quaternary, in addition to binary parameters.