The Pressure Dependence of the Excess Enthalpy of Mixtures of Isopropanol with Heptane and Isooctane up to 553 bar

Excess enthalpies HE of isopropanol + n-heptane and isopropanol + isooctane mixtures are reported measured at 298 K and various pressures up to 553 bar. The HE values are endothermic and show a remarkable decrease with pressure. The real associated solution model has been applied taking into account the volume change due to hydrogen bonding of the alcohol and was found to be insufficient for describing quantitatively the pressure dependence observed.

[1]  E. U. Franck,et al.  The system hydrogen ‐ water up to 440°C and 2500 bar pressure , 1981 .

[2]  R. Lichtenthaler,et al.  Excess Enthalpies of Liquid Alkane Mixtures at Pressures up to 500 bar I. Experimental Results , 1980 .

[3]  G. Schneider,et al.  Excess volumes of liquid mixtures at high pressures IV. Pressure dependence of excess Gibbs energies, excess entropies, and excess enthalpies of aqueous non-electrolyte mixtures up to 250 MPa , 1980 .

[4]  G. Maurer,et al.  Non-ideal mixing behaviour of (0.5C2H6 + 0.5C3H6) I. Results of calorimetric measurements , 1980 .

[5]  J. D. Isdale,et al.  p, ϱ, T behaviour for n-hexane + n-hexadecane in the range 298 to 373 K and 0.1 to 500 MPa , 1979 .

[6]  R. Lichtenthaler,et al.  An Isothermal Flow Calorimeter for Pressures to 600 bar , 1979 .

[7]  G. Schneider,et al.  Determination of reaction volumes of hydrogen-bonding equilibriums by high pressure near-infrared spectroscopy. 1. Self-association of .epsilon.-caprolactam in tetrachloromethane up to 2 kbar , 1979 .

[8]  G. Schneider,et al.  NoteExcess volumes of hexane + tetradecafluorohexane from 10 to 50 MPa at 333.15 K , 1979 .

[9]  G. C. Benson,et al.  Excess volumes for n-alkanols + n-alkanes II. Binary mixtures of n-pentanol, n-hexanol, n-octanol, and n-decanol + n-heptane☆ , 1978 .

[10]  G. Schneider,et al.  Excess volumes of liquid mixtures at high pressures III. The systems toluene + methylcyclohexane and 2-propanol + heptane from 10 to 250 MPa at 298.15 K , 1978 .

[11]  W. Streett,et al.  An experimental study of the equation of state of liquid mixtures of nitrogen and methane, and the effect of pressure on their excess thermodynamic functions , 1978 .

[12]  L. Hansen,et al.  The effect of pressure on the excess enthalpies of cyclohexane + n-hexane at 298.15 K , 1978 .

[13]  H. Lentz.  Ein Mischungskalorimeter für hohe Drücke , 1977 .

[14]  P. Jeschke,et al.  Thermodynamic Excess Functions of Aqueous Non‐Electrolyte Solutions at High Pressures , 1977 .

[15]  C. Wormald,et al.  The excess enthalpies of hydrogen + methane, hydrogen + nitrogen, methane + nitrogen, methane + argon, and nitrogen + argon at 298 and 201 K at pressures up to 10.2 MPa , 1977 .

[16]  G. Schneider,et al.  Excess Volumes of a Binary Liquid Mixture at High Pressure , 1972 .

[17]  A. E. Mather,et al.  The excess enthalpy of gaseous mixtures of nitrogen and carbon dioxide , 1970 .

[18]  G. Péloquin,et al.  Thermodynamic excess properties of three alcohol-hydrocarbon systems , 1967 .

[19]  J. Prausnitz,et al.  On the thermodynamics of alcohol—hydrocarbon solutions , 1967 .

[20]  C. Kretschmer,et al.  Thermodynamics of Alcohol‐Hydrocarbon Mixtures , 1954 .

[21]  P. Flory.  Thermodynamics of Heterogeneous Polymers and Their Solutions , 1944 .