Acid Catalysis of the Reaction of Ozone andChloride Ion

摘要

The investigations of kinetics of ozone and aqueous chloride solutionsrninteraction, resulting in Cl2 emission into the gas phase, have beenrnperformed. The reaction O3 + Cl – has been found to be accelerated byrnH+ ions, but demonstrates saturation effect as [H+] increases. The effectrnof H+ and Cl – concentrations, ion strength, temperature (in the range ofrn7 – 60℃) on the reaction rate has been studied. The mechanism thatrnexplains all experimental kinetic features of the reaction has beenrnproposed. Acid catalysis is explained by formation of a complex HO3Clrnin equilibrium with H+, O3, Cl–. Numerical values of the constants ofrnthe mechanism stages have been determined.