Abstract
In this work, the reaction kinetics of carbon dioxide (CO2) with diethylenetriamine (DETA)in methanol and ethanol systems were measured using the stopped flow technique over a temperature range of 293-313K in terms of pseudo first-order rate constant (k0). Concentration in the range of 10 to 50mol/m3 for diethylenetriamine were studied. The experimental data show that the pseudo first-order rate constants (k0) increase with the increase of both amine concentration and temperature. The zwitterion mechanism and the termolecular mechanism were used to representthe data for DETAinmethanol and ethanol systems with excllent ADDs of 3.5%, 2.4%, respectively. In comparison with EDA and AEEA in terms of k2, DETA exhibits a better reaction kinetics performance for capturingCO2. Those results will be useful in finding an efficient method for the removal of CO2 from industrial gases.
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