Vapour–liquid equilibria of binary and ternary mixtures containing 1-butanol, 2,2,4-trimethylpentane and 1-hexene at T = 313.15 K

• VLE measurements are reported for the binary (1-butanol + 1-hexene) and ternary (1-butanol + 2,2,4-trimethylpentane + 1-hexene) mixtures.
• The investigated temperature is 313 K.
• The experimental data were correlated using Redlich–Kister, Margules, Wilson, NRTL, UNIQUAC and Wohl equations.
• A positive shape for GE is observed for both systems.

Experimental isothermal (P–x) data at T = 313.15 K for the binary (1-butanol + 1-hexene) and ternary (1-butanol + 2,2,4-trimethylpentane + 1-hexene) systems are reported. The measurements have been performed with an isothermal total pressure cell. Data reduction by Barker’s method provides correlations for GE, using the Margules equation for the binary system and the Wohl expansion for the ternary system. Wilson, NRTL, and UNIQUAC models have been applied successfully to the data correlation of the binary and ternary systems. The mixtures investigated exhibit positive deviation from ideal behaviour. Good results are obtained for the correlation by all the models.