RT info:eu-repo/semantics/article
T1 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
A1 Lozano-Martín, Daniel
A1 Vega-Maza, David
A1 Martín, M. Carmen
A1 Tuma, Dirk
A1 Chamorro, César R.
AB Continuing our study on (CO2 + O2) mixtures, this work reports new experimental (p, ρ, T) data for two oxygen-rich mixtures with mole fractions x(O2) = (0.50 and 0.75) mol·mol−1, in the temperature range T = (250–375) K and pressure range p = (0.5–20) MPa, using a single-sinker densimeter. Experimental density data were compared to two well-established equation-of-state models: EOS-CG and GERG-2008. In the p, T-range investigated, the EOS-CG gave a better reproduction for the equimolar mixture (x(O2) = 0.5), whereas the GERG-2008 performed significantly better for the oxygen-rich mixture (x(O2) = 0.75). The EOS-CG generally overestimates the density, while the GERG-2008 underestimates it. This complete set of new experimental data, together with previous measurements, is used to calculate the virial coefficients B(T, x) and C(T, x), as well as the second interaction virial coefficient B12(T) for the (CO2 + O2) system.
PB Elsevier
SN 0896-8446
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/82392
UL https://uvadoc.uva.es/handle/10324/82392
LA eng
NO Journal of Supercritical Fluids, febrero 2021, vol. 169, p. 105074-105074
DS UVaDOC
RD 21-feb-2026