Kinetics of oxidation of dioxanes by ozone in aqueous solutions

The kinetics of oxidation of dioxanes by ozone was investigated by a spectrophotometric method in the temperature interval of 281-311 K. The activation parameters of the reaction were determined.     

Chemiluminescence in the reaction of ozone with 1,3-dioxans in aqueous solutions

Chemiluminescence in the visible part of spectrum is found to assist the oxidation of substituted 1,3-dioxans by ozone in aqueous media. The kinetics of the chemiluminescence decay was studied in the temperature interval 323-353 K, and the activation parameters of this process were determined. A kinetic scheme is proposed to explain the results. This revised version was published online in August 2006 with corrections to the Cover Date.     

Chemiluminescence in the course of methyl ethyl ketone oxidation by ozone in acidic aqueous solutions

Chemiluminescence in the visible spectral region is observed in the course methyl ethyl ketone oxidation by ozone in neutral and acidic aqueous solutions. The spectral composition of the chemiluminescence is studied. On going from neutral to acidic aqueous solutions of methyl ethyl ketone, the initial intensity of the signal increases and the kinetics of a decrease in the chemiluminescence intensity changes. A radical scheme of the process is proposed to explain the results obtained.Translated from Kinetika i Kataliz, Vol. 45, No. 6, 2004, pp. 829–835.Original Russian Text Copyright © 2004 by Zimin, Gusmanov, Khursan.     

Kinetics of the Reaction of Ozone with tert-Butanol

The kinetics of tert-butanol (ROH) oxidation by ozone in CCl₄ and H₂O solutions at 295 K is studied by spectrophotometry under batch conditions. The rate-limiting step of the process in both solvents is the reaction of ozone with the monomeric form of ROH. In H₂O, the hydrated molecules of ROH and ozone react with each other. In CCl₄, the association of ROH molecules, which changes the kinetics and mechanism of the process, should be taken into account. The reaction kinetic parameters and the dimerization constant of ROH in CCl₄ are determined.