Kinetics of the reaction of CO2 with aqueous potassium salt of taurine and glycine

摘要: The kinetics of the reaction between CO2 and aqueous potassium salts taurine glycine was measured at 295 K in a stirred-cell reactor with flat gas-liquid interface. For taurate solutions, temperature effect on 285 305 K. Unlike primary alkanolamines, partial order amino acid salt changes from one low concentration to approximately 1.5 concentrations as high 3,000 mol·m-3. At concentrations, apparent rate constant (kapp) for glycinate is comparable values literature. In absence reliable information literature mechanism reaction, applicability zwitterion termolecular (proposed originally alkanolamines) explored. mechanism, forward second-order (k2) seems be much higher than alkanolamines similar basicity, indicating that Bronsted plot might differ alkanolamines. contribution water deprotonation more significant reported secondary