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Branched alkanes 2-methyl propane 58.1238 S2 Table SI-1. Continued. Compound M w / g•mol -1 Literature parameters Group-contribution parameters m ε/k / K σ / Å Ref. m ε/k / K σ / Å

New experimental densities and surface tensions for binary mixtures of {heptane + 1-butanol, + 1-hexanol, and + 1-octanol} in a temperature range of (288.15, 293.15, 298.15, 303.15, and 308.15) K are reported for the whole composition range. Densities were measured with an Anton Paar DMA 4500 densimeter. Surface tensions were measured using a Lauda TVT2 automated tensiometer, which uses the principle of the pending drop volume. The experimental data of pure liquids and mixtures have been used to calculate excess molar volumes and surface tension deviations of the mixtures as a function of mole fractions.

A novel refrigerant-absorbent system for absorption refrigeration based on ionic liquids as absorbents and a fluoroalcohol as the refrigerant is analyzed. New data of densities at several temperatures in the 283.15-333.15 K range and several pressures up to 40 MPa have been measured. Experimental data have been used to study the behavior and influence of the temperature, pressure, and composition on the isothermal compressibility and the isobaric thermal expansion coefficient. In addition, vapor pressures and saturated density data of the refrigerant 2,2,2-trifluoroethanol were used to determine PC-SAFT parameters, whereas for the absorbent 1-butyl-3-methylimidazolium tetrafluoroborate the molecular parameters were optimized using density data at atmospheric pressure. Using these calculated PC-SAFT parameters, PVT behavior, derived properties and vapor pressures were reasonably well predicted.