ESR study into mechanism of heterogeneous-catalytic oxidation on oxides

The role of radical particles in heterogeneous-catalytic oxidation of H2; CO; SO2; NH3; C3H6 on the rare earth oxides (yttrium, lanthanum magnesium and scandium oxides) and alkaline earth metal oxides was studied by the ESR method. The conclusion was made about the great reactivity of the peroxide structures O2- in the oxidation catalysis in comparison to other formulas of chemisorption oxigen on oxides. The kinetic investigations are chemisorption oxigen on oxides. The kinetic investigations are carried out on the change of the concentration of paramagnetic particles O2 during the catalysis. On the basis of the received data the conclusion is made about the reaction process of catalytic oxidation on rare and alkaline-earth oxides according to radical-chain mechanism with the formation of radical particles O2-, CO3-, SO4-, CO2- as interediate products