Add time:07/16/2019         Source:sciencedirect.com

This work presents experimental data on the CO2 transfer into aqueous blends of N,N-diethylethanolamine (DEEA) and N-methyl-1,3-propane-diamine (MAPA). Additionally, data on density, viscosity and N2O solubility into the studied blends are given. The data are interpreted using the two-film theory and invoking the pseudo-first order assumption. The DEEA clustering hypothesis allows for qualitatively explaining the complex behavior that is obtained in the experiments.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.

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