EXCESS MOLAR ENTHALPIES OF CYCLOALKANOL PLUS N-ALKANE MIXTURES UNDER HIGH-PRESSURE

Excess molar enthalpies of cyclopentanol and cyclohexanol in mixtures with n-hexane, n-dodecane or n-hexadecane have been determined at 298. 65 and 308.65 K, and at pressures up to 10 MPa. The H(m)E values are p ositive over the entire mole fraction range, and increase with increas ing temperature and chain length of the n-alkane, but decrease with in creasing pressure. The dependence of H(m)E on the size and shape of th e component molecules is discussed.