Characterizing second generation biofuels: Excess enthalpies and vapour-liquid equilibria of the binary mixtures containing 1-pentanol or 2-pentanol and n-hexane

Add time:07/12/2019    Source:sciencedirect.com

Experimental data of excess enthalpies and vapour-liquid equilibria (VLE) are reported for the binary systems (1-pentanol + n-hexane) and (2-pentanol + n-hexane). An isothermal flow calorimeter was used to determine excess enthalpies at T = (298.15 and 313.15) K and the results were fitted using Redlich-Kister equation. Vapour-liquid equilibria data were measured using an isothermal total pressure cell at T = 313.15 K. Barker’s method allows to correlate these data using Margules, Wilson, NRTL and UNIQUAC equations. An endothermic behavior is observed when 1-pentanol or 2-pentanol is mixed with n-hexane whose effect increases at higher temperatures and both systems present a positive deviation from the Raoult’s law.

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