Ether + alcohol + hydrocarbon mixtures in fuels and bio-fuels: Excess enthalpies of binary mixtures containing dibutyl ether (DBE) or 1-butanol and 1-hexene or methylcyclohexane or toluene or cyclohexane or 2,2,4-trimethylpentane at 298.15 K and 313.15 K

New experimental excess molar enthalpy data (304 points) of the binary systems dibutyl ether (DBE) or 1-butanol and 1-hexene, or methylcyclohexane or toluene at 298.15 K and 313.15 K, and DBE or 1-butanol and cyclohexane or 2,2,4-trimethylpentane (TMP) at 313.15 K at atmospheric pressure are reported. A quasi-isothermal flow calorimeter has been used to make the measurements. All the binary systems show endothermic character except the system DBE + 1-hexene at both temperatures. The experimental data for the binary systems have been fitted using the Redlich–Kister rational equation. The values of the standard deviation indicate good agreement between the experimental results and those calculated from the equations.

► New excess enthalpy data for binary mixtures of dibutyl ether + hydrocarbon and 1-butanol + hydrocarbon are reported. ► 10 binary systems at 298.15 K and 313.15 K were measured by means of an isothermal flow calorimeter. ► 304 data were fitted to a Redlich–Kister type equation. ► Intermolecular and association effects involved in these systems have been discussed.