Excess Molar Enthalpies of isobutanol (۱) + ۱-alkanols (C۱–C۳) (۲) at ۲۹۸.۱۵ K and Correlated with NRTL model

The thermophysical properties are important to quantify the deviation from ideality of the thermodynamic functions of mixtures, which result essentially from molecular interactions [۱]. ۱-alkanols are of great interest nonideal compounds due to they can form complex structure [۲]. In this project excess molar enthalpies, for binary mixtures of isobutanol + methanol, ethanol and ۱-propanol at ۲۹۸.۱۵ K were measured experimentally by a solute calorimeter. The experimental results were correlated with a polynomial Redlich–Kister equation [۳] for binary mixtures to estimate the coefficients. The excess molar enthalpies are negative over the entire range of composition for all mixtures. These indicate that isobutanol interacts more strongly with ۱-alkanols (C۱–C۳). The experimental results were explained according to the NRTL model [۴].

کلیدواژه ها:

Excess molar enthalpy ، Isobutanol ، Methanol ، Ethanol ، ۱-Propanol ، NRTL model