Accurate experimental (p, ρ, T) data of the (CO2 + O2) binary system for the development of models for CCS processes

Experimental Density Data of Three Carbon Dioxide and Oxygen Binary Mixtures at Temperatures from 276 to 416 K and at Pressures up to 20 MPa

“…(A): Pressure as a function of molar density for the O 2 + CO 2 (mixture 3: 0.128:0.872) binary system [(C): zoom in the low-pressure region]. (△): This work, (•): Mantovani et al , (▲): Lozano-Martin et al (B): Compressibility factor as a function of pressure (△): 279.05, (×): 353.62, (▲):414.31 K. Solid and dashed line: EoS-CG with Wong Sandler mixing rules and NRTL activity coefficient model.…”

“…They have mentioned in their paper all the available references concerning the VLE and density properties of the CO 2 +O 2 binary system. We can also cite the works of Lozano-Martín et al 5 , Commodore et al 6 and Mantovani et al 7 . In these investigations, the composition in O 2 is lower than 0.2.…”

Thermodynamic characterization of the (CO2 + O2) binary system for the development of models for CCS processes: Accurate experimental (p, ρ, T) data and virial coefficients

“…The prepared mixtures were supplied in aluminum cylinders with a volume of 10 dm 3 . The entire mixture preparation procedure was executed in the same way as described in part one of this study [1]. Carbon dioxide and oxygen were used without further purification, but information on impurities from the specification by the supplier was considered in the mixture preparation.…”

“…The complete set of density data for the binary system (CO 2 + O 2 ) presented in this work, and in the previous work [1], covers a wide range of temperature (from T = 250 K to T = 375 K), pressure (up to p = 20 MPa), and composition (from x(O 2 ) = 0.05 to x(O 2 ) = 0.75). This complete set of new experimental data from both studies is used in this work to calculate the virial coefficients B(T, x) and C(T, x), as well as the second interaction virial coefficient B 12 (T) for the (CO 2 + O 2 ) binary mixture.…”

“…High-accuracy density data are of great relevance for the development of reliable equations of state. In part one of this study [1], we reported accurate density measurements for three binary mixtures of carbon dioxide with oxygen (amount-of-substance fraction x(O 2 ) = 0.05, 0.10, 0.20) in the temperature range T = (250 to 375) K and maximum pressures up to p = 13 MPa, together with the corresponding calculations using the two equation-of-state models GERG-2008 [2] and EOS-CG [3]. It could be observed that the GERG-2008 EoS fitted the experimental data within its claimed uncertainty in density (1 %) only for the mixture with the lowest oxygen content (amount-of-substance fraction x(O 2 ) = 0.05).…”