Korean Journal of Chemical Engineering, Vol.26, No.1, 240-245, January, 2009
Correlation of measured excess enthalpies of binary systems composed of n-alkane+1-alkanol
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The excess enthalpies of the binary mixture composed of n-alkane (n-octane, n-nonane, n-decane) and 1-alkanol (ethanol, 1-propanol, 1-butanol) have been measured by using a flow-type isothermal microcalorimeter (model CSC 4400, Calorimetry Science Corp., USA) at 313.15 K under atmospheric pressure. The measured excess enthalpy data were correlated by the Redlich-Kister equation and the nonrandom lattice fluid with hydrogen bonding (NLFHB)
equation of state. Hydrogen bonding type specific parameters were introduced in the NLF-HB equation of state framework, and the effects of those parameters were investigated for excess enthalpy calculations. With two adjustable temperature-dependent interaction parameters, the NLF-HB equation represents the excess enthalpies for nine binary systems qualitatively.
Keywords:Excess Enthalpy;Isothermal Microcalorimeter;Equation of State;N-Alkane;1-Alkanol;Redlich-Kister Equation
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