title: Catalytic wet peroxide oxidation of phenol solutions over CuO/CeO2 systems.
abstract: Three 5% CuO/CeO(2) catalysts were synthesized by sol-gel, precipitation and combustion methods, followed by incipient wetness impregnation with copper nitrate. The samples were characterized by XRD, TPR, BET and tested for the catalytic wet peroxide oxidation of a phenol solution (5 g/L). The reaction took place in a batch reactor at atmospheric pressure, in a temperature range of 60-80°C, during 4h. Phenol conversion, H(2)O(2) consumption, pH and chemical oxygen demand were determined. The reaction temperature and the catalyst loading did improve the phenol and the H(2)O(2) conversions. The effect on the selectivity towards complete mineralization was less marked, with levels among 60-70%. Stepwise addition of H(2)O(2) was also tested.
authors.affiliation: División Catalizadores y Superficies, INTEMA, Universidad Nacional de Mar del Plata/CONICET, Juan B. Justo 4302, 7600 Mar del Plata, Buenos Aires, Argentina. pamassa@fi.mdp.edu.ar
authors.forename: Paola
authors.initials: P
authors.lastname: Massa
authors.forename: Fernando
authors.initials: F
authors.lastname: Ivorra
authors.forename: Patricia
authors.initials: P
authors.lastname: Haure
authors.forename: Rosa
authors.initials: R
authors.lastname: Fenoglio
mesh_terms: D057919:Biological Oxygen Demand Analysis; D002384:Catalysis; D002563:Cerium / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D010084:Oxidation-Reduction; D019800:Phenol / Q000737:chemistry*
chemical_list: D002563:Cerium; D019800:Phenol; C030583:ceric oxide; D003300:Copper; D006861:Hydrogen Peroxide; C030973:cupric oxide