Search results for "wet peroxide oxidation"

showing 2 items of 2 documents

Heterogeneous catalytic degradation of phenolic substrates: catalysts activity

2009

This review article explored the catalytic degradation of phenol and some phenols derivates by means of advanced oxidation processes (AOPs). Among them, only the heterogeneous catalyzed processes based on catalytic wet peroxide oxidation. catalytic ozonation and catalytic wet oxidation were reviewed. Also selected recent examples about heterogeneous photocatalytic AOPs; will be presented. In details, the present review contains: (i) data concerning catalytic wet peroxide oxidation of phenolic compounds over metal-exchanged zeolites, hydrotalcites, metal-exchanged clays and resins. (ii) Use of cobalt-based catalysts, hydrotalcite-like compounds, active carbons in the catalytic ozonation proc…

Environmental EngineeringHealth Toxicology and MutagenesisHeterogeneous catalysisPeroxideCatalysisCatalysischemistry.chemical_compoundOzoneTransition metalCatalytic wet peroxide oxidation; Catalytic ozonation; Hydrotalcite-like compoundsPhenolsCatalytic wet peroxide oxidationEnvironmental ChemistryOrganic chemistryHydrotalcite-like compoundsWet oxidationZeoliteWaste Management and DisposalAcetic AcidAOPs Catalytic wet peroxide oxidation Catalytic ozonation Catalytic wet oxidation Phenol Acetic acid Metal-exchanged zeolites Hydrotalcite-like compounds Metal-exchanged/clays and resins Activated carbon Mixed oxides Noble metals CoOx/Al2O3-BaO catalystsPollutionNanomaterial-based catalystPeroxidesCatalytic oxidationchemistryMetalsCatalytic ozonationOxidation-Reduction
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Ultrasound-assisted MnO2 catalyzed homolysis of peracetic acid for phenol degradation: The assessment of process chemistry and kinetics

2013

Abstract The combination of peracetic acid (PAA) and heterogeneous catalyst (MnO 2 ) was used for the degradation of phenol in an aqueous solution in the presence of ultrasound irradiation (US). As a relevant source of free radicals (e.g. OH), peracetic acid was comprehensively studied by means of electron spin resonance (ESR) spin trapping (ST) techniques with the subsequent identification of free radicals by simulation based fitting (SBF) technique. The radical reaction mechanism, where hydroxyl radical was a primary product of O O bond rupture of PAA, was established taking into account radical reactions, occurring during sonolysis. The potential barriers and the reaction heat were deter…

General Chemical EngineeringRadicalwaterBiophysicsmechanismPhotochemistryIndustrial and Manufacturing EngineeringCatalysisSonochemistrychemistry.chemical_compoundPeracetic acidfree-radicalsintermediateEnvironmental ChemistryPhenolLaboratorium voor Plantenfysiologieta116decompositionSpin trappingChemistryaqueous-solutionsGeneral ChemistrydestructionHomolysisBiofysicasystemsHydroxyl radicalwet peroxide oxidationsonochemistryLaboratory of Plant PhysiologyChemical Engineering Journal
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