Densities and bubble points of binary mixtures of carbon dioxide and n-heptane and ternary mixtures of n-butane, n-heptane and n-hexadecane

Experimental measurements and theoretical modeling of high-pressure mass densities and interfacial tensions of carbon dioxide + n-heptane + toluene and its carbon dioxide binary systems

“…According to DECHEMA [35] the bulk densities (liquid and vapor) of the CO 2 binary mixtures have been measured in a broad range of temperatures and pressure. Specifically, for the case of CO 2 + n-C 7 H 16 mixture, the bulk liquid densities have been reported at three mole fractions of liquid CO 2 (x CO2 = 0.2918; 0.3888; 0.4227) from 316.28 K to 459.37 K, and over the pressure range of 4.5 to 55.5 MPa by Fenghour et al [36]. Medina-Bermúdez et al [37] reported additional values of liquid density at five mole fractions of liquid CO 2 (x CO2 = 0.0218, 0.3148, 0.5085, 0.7514, 0.9496) at the temperature range 313 K to 363 K, and over the pressure range (2 to 25) MPa.…”

Measurement of the vapour–liquid equilibrium of binary and ternary mixtures of CO2, N2 and H2, systems which are of relevance to CCS technology

“…This is because the PR EoS cannot accurately reproduce the density of pure CO 2 in the liquid and the near-critical regions. Volume translation methods (Fenghour et al, 2001;Kutney et al, 1997) may improve the accuracy of the density calculation of CO 2 + H 2 when using the cubic equations of state, including the PR EoS.…”

Predicting the phase equilibria of synthetic petroleum fluids with the PPR78 approach

“…Predicting the phase behavior of crude oils 48,49 measured six bubble-point pressures for three ternary and for three quaternary systems containing n-alkanes ranging from methane to n-hexadecane. The six corresponding (P,T) phase envelopes predicted by the PPR78 model can be seen in Supporting Information Figure S5.…”