Kinetics of CO2 absorption in aqueous blends of N,N-diethylethanolamine (DEEA) and N-methyl-1,3-propane-diamine (MAPA)

The observed kinetic constant was modeled using the direct mechanism, considering water, MAPA and DEEA as possible proton receivers. The contribution of DEEA represents 52 to 98% of the observed kinetic constant. The empirical correlations for describing the observed kinetic constant presented in this work can be used, together with the physical properties given in this work, to predict the CO2 absorption flux into the studied DEEA/MAPA blends with reasonable accuracy.