Abstract
Reaction rate constants for the reaction between CO 2 and the sterically hindered amine, 2-amino-2-methyl-1-propanol (AMP), were determined from measurements of the rate of absorption of CO 2 into both aqueous and nonaqueous (1-propanol) AMP solutions. A stirred-cell reactor having a horizontal liquid-gas interface was used for the absorption studies. The zwitterion mechanism was found to be suitable for modelling the absorption of CO 2 into the aqueous AMP solutions and into the 1-propanol-AMP solvent. The partial order in amine is greater than one for both cases. The kinetic parameters for aqueous AMP solutions were obtained for temperatures from 15 to 45°C and over the concentration range of 0.25–3.5 kmol m −3 of AMP.
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