Fast reactions of CO₂ in alkaline solutions- (a) Carbonate buffers with arsenite, formaldehyde and hypochlorite as catalysts (b) Aqueous monoisopropanolamine (1-amino-2-propanol) solutions

Abstract

(a) The anions of certain weak acids are known to catalyse the reaction between CO₂ and water. The catalytic powers of arsenite, formaldehyde hydrate and hypochlorite ions have been determined under various conditions by measuring rates of absorption of CO₂ into carbonate buffer solutions containing these anions. The energies of activation have been estimated. (b) Carbon dioxide reacts rapidly with monoisopropanolamine according to second-order kinetics to give the amine carbamate. The rate constant of the reaction has been determined over a range of temperatures. Its magnitude is similar to that for other alkanolamines which have been investigated. The energy of activation is 10,500 cal/g mole.