Search

Coefficients of ozone solubility R t at pH values ranging from 0.1 to 11 are defined. The value of R t in a pH range from 2 to 6 is 0.3 ± 0.1. A decrease in Rt below the specified range is associated with the decay of ozone. The mechanisms of ozone decomposition in alkaline and acidic media are analyzed. Ozone solutions in acidic media are the most resistant.

Cement-containing catalysts of ozone decomposition were synthesized on the basis of iron oxides obtained by ozonation of iron-containing aqueous solutions. X-ray diffraction analysis and Mossbauer spectroscopy showed that α-Fe2O3 occurs in the catalyst as highly dispersed nanoparticles. The catalysts obtained are efficient in the reaction of ozone decomposition and are as active as the best representatives of cement-containing catalysts of the GTT type.