Excess enthalpies and volumes of binary mixtures of 1-alkenes with methanol and with ethanol

Heat capacities and densities of the binary mixtures containing ethanol, cyclohexane or 1-hexene at high pressures

“…The values are positive in the whole of the composition range at T = (313.15 and 333.15) K, but the excess volumes are negatives at a 1-hexene mole fraction higher than 0.9 at 293.15 K and 0.8 at 273.15 K. Moreover, the pressure raise produces a decrease in the excess volumes more acute at hydrocarbon rich compositions even they change to negative values, the behaviour as a function of composition and pressure is shown in figure 6b at T = 313.15 K. The complex positive-negative (''S''-shape) curves have been pointed out in the literature [30,31]. The unique data available in the literature for this mixture at 298.15 K and atmospheric pressure also show a positive value in the whole composition range [32]. For the mixture (cyclohexane + ethanol) the comparison between our experimental density data and the literature [33] are represented in figure 7, where can be seen the good agreement.…”

Measurements of P-ρ-T for Propan-1-ol or Propan-2-ol + Oct-1-ene between 303.15–353.15 K and 0.1–20 MPa

“…Such data are useful to process engineers as it used in applications of flow and storage design in separation processes, in computational model development, and in transport engine design. There is however limited data in the literature characterizing the P- ρ -T behavior of alcohol–alkene (olefin) mixtures as a function of pressure in the literature (at 298 K and atmospheric conditions, , ethanol + hex-1-ene at pressures up to 20 MPa and temperatures up to 400 K), although alkenes constitute a significant proportion of petroleum-based fuel cuts.…”