Catalysts for heterogeneous oxidation reaction based on metalloporphyrins immobilized on kaolinite modified with triethanolamine

► Modified clay mineral kaolinite as a support for catalyst immobilization. ► Metalloporphyrin heterogenized on kaolinite as an easy process to obtain a catalyst. ► Solids for heterogeneous catalysis with reuse capacity. ► Catalyst with efficiency and selectivity in oxidation reaction.