Catalytic wet peroxide oxidation of phenol over Al-Cu or Al-Fe modified clays

Al-Fe or Al-Cu modified clays were prepared from two natural montmorillonites and employed in the phenol oxidation with hydrogen peroxide in water. The samples were efficient in phenol elimination under mild experimental conditions (atmospheric pressure, 293 K and small quantities of hydrogen peroxide) without considerable leaching of the metal ions. The clays modified with Fe achieved high conversions of phenol and TOC thus showing to be very selective towards the formation of Co-2 and H2O. (C) 2003 Elsevier Science B.V. All rights reserved.