Kinetic and Mechanistic Studies of the Ozonation of Alicyclic Amines

Studies about the ozonation of the polar and mobile alicyclic amines pyrrolidine, piperidine, morpholine and piperazine were carried out in model water at pH 7.0. According to a pseudo-first order rate law the reaction-rate constants were determined from the decrease of the amine concentration vs. the reaction time. The order of degradation of the alicyclic amines by ozone, resulting from the kinetic constants obtained, is piperazine > morpholine ? piperidine > pyrrolidine. The pH value of the water, the chemical structure of the amines and their pK_A values are recognized to be parameters influencing the reactionrates of the amines.