Temperature dependence of heats of vaporization of saturated hydrocarbons C5-C8; Experimental data and an estimation method

Abstract

Heats of vaporization of a group of 10 alkanes C6-C8 and 2 cycloalkanes were measured in a temperature range of 25-80 °C. By combining the obtained results with selected literature data, a set of very accurate values of heats of vaporization as functions of temperature was made up for 22 saturated C5-C8 hydrocarbons. This set was employed for the verification of the proposed estimation method for the determination of heat of vaporization which is based on the principle of combination of a contribution method with constant entropy-of-vaporization rules. In this way it is then possible to estimate heats of vaporization of C4-C9 alkanes with an error lower than 0.5%.

A correlation for heat of vaporization of pure compounds

“…Vetere [28] ΔH v /RT c =A+BT r +CT r D 24 Somayajulu I [29] ΔH v =A(1/T r − 1)+B(1− T r ) 3/8 +C(1− T r ) 18 [24], [54], [55], [56], [57], [58], [ [24], [41], [54], [57], [58], [59], [70], [71], [ [24], [38], [41], [54], [57], [72], [103], [104], [ [46], [49], [58], [70], [117], [118], [119], [120], [121], [122], [123], [ [38], [49], [58], [72], [74], [109], [110], [127], [132], [133], …”

Solubility Parameter from an Acoustic Method: Temperature Effect and Applications to Petroleum

“…Supporting Information for this article can be found under DOI: https://doi.org/10.1002/ceat.202000225. Supporting Information includes additional references to primary literature relevant for this research 25–64.…”

Solubility of Anthracene in Binary p-xylene + Alkane and Benzene + Alkane Solvent Mixtures

“…Results of these measurements are compared to predictions of the NIBS model. 35 The superscript (0) indicates that the solvent composition is calculated as if the solute were not present. The activity of the solid solute relative to the supercooled liquid, can be calculated from the molar heat of fusion (A17Ys) at the normal melting point temperature (T,) and the difference between the molar heat capacities of the liquid and solid.…”