Decay of H2O2 under the action of the colloidal catalyst based on iron(III) oxides in a neutral medium

Resumo

The catalytic activity of the colloidal catalyst based on iron(III) hydroxide was studied in the decomposition of H₂O₂ in a neutral medium (pH 6.7). A colloidal micellar solution of iron(III) hydroxide after preparation was kept at 19–20 °С for 2 or 20 h without additives or with C₂H₅OH additives. The decomposition of H₂O₂ under the action of the colloidal catalyst (20 h) proceeds via the first-order reaction with the decay rate constant k_d = 1.26•10^–4 s^–1, whereas the decay rate of the first-order reaction is k_d = 0.77•10^–4 s^–1 for the colloidal catalyst (2 h) prepared in the presence of C₂H₅OH.