Kinetics of Carbon Dioxide Release During the Ozonation of Aqueous Solutions of Formic Acid

Abstract

The kinetics of carbon dioxide release during the interaction between ozone and an aqueous solution of formic acid in a bubble column reactor has been studied for the first time. A simple and effective method of determining carbon dioxide in a gas stream has been developed. It is shown that the formation of 1 mol of CO2 corresponds to the consumption of ~2.4 mol of O3. The value of the true rate constant of the reaction between O3 molecule and formate ion HCOO− has been found (120 ± 15 L mol−1 s−1 at 20–21°C). It has been confirmed that O3 does not interact with undissociated HCOOH molecules.