Degradation of Acid Orange 7 using a saponite-based catalyst in wet hydrogen peroxide oxidation: Kinetic study with the Fermi's equation

▶ Acid Orange 7 is degraded by a heterogeneous catalytic wet hydrogen peroxide process in less than 4 h. ▶ The catalyst, a pillared saponite clay impregnated with Fe(II) acetylacetonate (16 wt.% of iron), is very active (and also stable-low leaching). ▶ Temperature has a dominant effect in the process performance. ▶ Kinetics is based on the Fermi's equation, with remarkable adherence of the model to the experimental data.