The N2O analogy in the CO2 capture context: Literature review and thermodynamic modelling considerations

A thermodynamic modelling of Henry's constants of CO2 and N2O in water is conducted, and two alternative correlations are provided: one for operations up to 1 MPa (typical of post-combustion CO2 capture), and the other for operations up to 20 MPa (for natural gas sweeting process). The correlations for the ratio of the solubility of N2O to that of CO2 in water are presented together with their 95% confidence bands.