Equilibrium between carbon dioxide and aqueous monoethanolamine solutions

Abstract The partial pressure of carbon dioxide has been measured over aqueous monoethanolamine solutions (1.0, 2.5, 3.75 and 5.0 N) at temperatures of 25, 40, 60, 80, 100 and 120°C. Partial pressures of CO 2 ranged between 0.2 and 6616 kPa. b The results extend previously published data to higher partial pressures. Comparisons have been made with two methods of prediction based upon a thermodynamic model.