Measurement and modeling of excess enthalpies of hydrocarbon mixtures: Alkene + Alkane or + Cycloalkane at 313.15 K

New measurements of excess enthalpy of binary mixtures containing 1-hexene, Cyclohexane and 2,2,4-Trimethylpentane at 313.15 K are reported in this work, by using a quasi-isothermal calorimeter at atmospheric pressure. The measured data of H
^E
has been fitted using NRTL and UNIQUAC models, and Redlich-Kister mathematical equation. All the studied binary mixtures show an endothermic behavior.