2-Chlorophenol degradation by catalytic wet air oxidation using copper supported on TiO2-CeO2-ZrO2

• Published in: Water science and technology 2019-09, Vol.80 (5), p.911-919
• Main Authors: García-Hernández, Luis Enrique, Frías-Márquez, Dora Ma, Pacheco-Sosa, J. Gpe, Cervantes-Uribe, A., Arévalo-Pérez, J. Carlos, Pérez-Vidal, Hermicenda, Silahua-Pavón, Adib Abiu, Lunagómez-Rocha, Ma. Antonia, Torres-Torres, J. G.
• Format: Article
• Language: English
• Subjects: Analytical methods; Biodegradation; Catalysis; Catalysts; Catalytic converters; Cerium oxides; Chlorophenol; Copper; Diffuse reflectance spectroscopy; Gels; Hazardous materials; Heavy metals; Nanoparticles; Nitrates; Ortho-chlorophenol; Oxidation; Phenols; Pollutants; Reaction mechanisms; Reflectance; Scanning electron microscopy; Sol-gel processes; Spectroscopy; Titanium dioxide; Wet oxidation process; Wood preservatives; X-ray diffraction; Zirconium dioxide
• ISSN: 0273-1223; 1996-9732
• DOI: 10.2166/wst.2019.330

In this work, we describe the morphological, electronic and catalytic properties of support TiO2-CeO2-ZrO2, prepared by sol–gel method, which was impregnated with copper at 5 and 10% by weight, in order to obtain efficient catalysts in the catalytic wet air oxidation (CWAO) of 2-cp. The catalysts were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM-EDS), UV-Vis diffuse reflectance spectroscopy (DRS) and nitrogen physisorption by the Brunauer-Emmett-Teller (BET) method. The activity of the materials used in this study revealed that without the presence of Cu, the SCO2 is low and with a content of 10% this metal shows the best catalytic behaviour; conversely, a reaction mechanism is proposed that describes the complete oxidation of 2-cp in this case.