Reaction kinetics of CO2 in aqueous methyldiethanolamine solutions using the stopped-flow technique

摘要

The kinetics of the reaction between CO2 and methyldiethanolamine in aqueous solutions have beenstudied using the stopped-flow technique at 288, 293, 298 and 303 K. The amine concentrationranged from 250 to 875 mol·m-3. The overall reaction rate constant was found to increase with amineconcentration and temperature. The acid base catalysis mechanism was applied to correlate theexperimentally determined kinetic data. A good agreement between the second order rate constantsfor the CO2 reaction with MDEA computed from the stopped-flow data and the values reported inthe literature was obtained.