Oxidation of hazardous compounds by heterogeneous catalysis based on Cu/Al2O3 system in Fenton-type reactions

COVINICH, L.G.; MASSA, P.; FENOGLIO, R.J.; AREA, M.C.

CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY

TAYLOR & FRANCIS INC

Lugar: Londres; Año: 2016 vol. 46 p. 1745 - 1781

1064-3389

This review examines in detail all components involved in heterogeneous Fenton-type reactions, with special focus on copper species supported on alumina for H2O2decomposition, their redox chemistry, and their practical advantages over traditional Fenton for the degradation of recalcitrant organic compounds. Several aspects for a deeper comprehension of the properties of γ-Al2O3as support for catalytic applications are discussed. Iron-free systems stabilityafter calcination and catalyst performance during the oxidation reaction areevaluated to solve the disadvantages of iron-based system. Copper speciessupported on alumina for H2O2 decomposition inFenton-like reactions are examined, with special focus on their redox chemistryand practical advantages over traditional Fenton system for recalcitrantcompounds degradation. Characterization techniques for the elucidation of thestructures, compositions, and chemical properties of both the solids used inheterogeneous catalysis and the adsorbates and intermediates present on the surfaces of the catalysts during reaction are explained. Global indicators for chemical characterization of wastewaters and measurement of catalytic efficiency are described.