화학공학소재연구정보센터
Journal of Chemical and Engineering Data, Vol.55, No.9, 4021-4024, 2010
Excess Molar Enthalpies of Benzyl Alcohol plus Alkanols (C-1-C-6) and Their Correlations at 298.15 K and Ambient Pressure
Excess molar enthalpies, H-m(E), for the binary mixtures of benzyl alcohol + methanol, ethanol, propan- 1 -ol, butan- 1 -ol, pentan- 1 -ol, and hexan- 1 -ol were measured over the entire range of composition at 298.15 K and ambient pressure using a Parr 1455 solution calorimeter. From the experimental results the excess partial molar enthalpies, H-i(E), and excess partial molar enthalpies at infinite dilution, H-i(E,infinity), were calculated. While the excess molar enthalpies are negative for the methanol mixture, those for ethanol, propan- 1 -ol, butan- 1-ol, pentan- 1 -ol, and hexan- 1 -ol mixtures are positive over the entire range of composition of benzyl alcohol. The experimental data were correlated by the Redlich-Kister equation and the two thermodynamics models (Wilson and nonrandom two-liquid, NRTL).