Search results for "Oxidative degradation by ozone"

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Oxidative degradation properties of Co-based catalysts in the presence of ozone

2007

Four series of cobalt-based catalysts, such as bare Co3O4 and CoO, CoOx-CeO2 mixed oxides, CoOx supported over alumina and alumina-baria and CoMgAl and CoNiAl hydrotalcites have been synthesized and investigated for the oxidative degradation of phenol in the presence of ozone. Characterizations were obtained by several techniques in order to investigate the nature of cobalt species and their morphological properties, depending on the system. Analyses by XRD, BET, TPR, UV-visible diffuse reflectance spectroscopy and TG/DT were performed. The CoNiAl hydrotalcite exhibits, after 4 h of reaction, the highest phenol ozonation activity followed by Co(3 wt%)/Al2O3-BaO and CoMgAl. The samples Co(1 …

OzoneHydrotalcitePhenolChemistryProcess Chemistry and TechnologyInorganic chemistrychemistry.chemical_elementHydrotalciteSettore CHIM/06 - Chimica OrganicaHeterogeneous catalysisCatalysisCatalysisOxidative degradation by ozonechemistry.chemical_compoundOzoneSettore CHIM/03 - Chimica Generale E InorganicaAluminium oxideNaphtol blue blackPhenolLeaching (metallurgy)CobaltHydrotalcitesCoO/AlO-BaOGeneral Environmental Science

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