Search results for "OXIDATION"

showing 10 items of 1913 documents

Photodegradation of pharmaceutical drugs in aqueous TiO2 suspensions: mechanism and kinetics

2007

WOS: 000251165800003

Settore ING-IND/24 - Principi Di Ingegneria ChimicaAqueous solutionendocrine system diseasesChemistryKineticsInorganic chemistryHeterogeneous PhotocatalysisGeneral ChemistryMineralization (soil science)Heterogeneous catalysisHeterogeneous photocatalysiCatalysischemistry.chemical_compoundTamoxifenTitanium dioxidePhotocatalysisTitanium dioxidePartial oxidationGemfibrozilPhotodegradationDrug photodegradation
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Autocatalytic Photo-Oxidation of 2-Methoxybenzyl Alcohol and O2 Quenching therein

2014

Settore ING-IND/24 - Principi Di Ingegneria ChimicaAutocatalytic Photo-Oxidation O2 QuenchingSettore CHIM/07 - Fondamenti Chimici Delle TecnologieAutocatalytic Photo-Oxidation 2-Methoxybenzyl Alcohol O2 Quenching
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Process for the production of bromine

2016

A process for the preparation of molecular bromine, by means of advanced oxidation processes or their combination is disclosed

Settore ING-IND/24 - Principi Di Ingegneria ChimicaBromine advanced oxidation processSettore CHIM/07 - Fondamenti Chimici Delle Tecnologie
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Advances in selective conversions by heterogeneous photocatalysis

2010

Selective photocatalytic conversions are offering an alternative green route for replacing environmentally hazardous processes with safe and energy efficient routes. This paper reports the most recent advances in the application of heterogeneous photocatalysis to synthesize valuable compounds by selective oxidation and reduction.

Settore ING-IND/24 - Principi Di Ingegneria ChimicaChemistryMetals and AlloysNanotechnologyGeneral ChemistryPhotochemistryCatalysisSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsHeterogeneous photocatalysis selective oxidation selective reductionHazardous wasteMaterials ChemistryCeramics and CompositesPhotocatalysisSettore CHIM/07 - Fondamenti Chimici Delle TecnologieChemical Communications
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Facile preparation of CuBi2O4/TiO2 hetero-systems employed for simulated solar-light selective oxidation of 4-methoxybenzyl alcohol model compound

2023

The selective photocatalytic oxidation of organic substances is today considered one of the green techniques to synthesize important starting materials in different technological applications. This work reports an efficient, simple and cheap strategy for the synthesis of a new photocatalytic CuBi2O4-TiO2 (CBO/TiO2) heterosystem at room temperature. The prepared powders were characterized by X-ray diffraction (XRD), UV–Vis diffuse reflectance spectra (DRS), field-emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), and electrochemical measurements. The photocatalytic activity was evaluated by performing a probe reaction, namely the partial oxidation of 4-me…

Settore ING-IND/24 - Principi Di Ingegneria ChimicaCuBi2O4/TiO2 (CBO/TiO2) hetero-system Heterogeneous photocatalysis Selective alcohol oxidation Simulated solar lightSettore ING-IND/23 - Chimica Fisica ApplicataProcess Chemistry and TechnologySettore CHIM/07 - Fondamenti Chimici Delle TecnologiePhysical and Theoretical ChemistryCatalysisMolecular Catalysis
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Heterogeneous photocatalysis: a promising advanced oxidation process

2018

This chapter reports the fundamentals of heterogeneous PC. In particular, different kinetic models and the influence of some parameters (such as pH, temperature, light intensity) on the rate of PC are described, and the effects of some photocatalyst modifications are discussed. Methods for photoreactor modeling are analyzed and the coupling of PC with other AOPs using H2O2, O3, and peroxydisulfate are discussed.

Settore ING-IND/24 - Principi Di Ingegneria ChimicaHeterogeneous Photocatalysis Advanced Oxidation Process Photocatalytic Reactor Kinetics of Photocatalytic ProcessesSettore CHIM/07 - Fondamenti Chimici Delle Tecnologie
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Photocatalytic oxidation of aromatic alcohols to aldehydes in aqueous suspension of home prepared titanium dioxide: 2. Intrinsic and surface features…

2008

Some intrinsic electronic properties of home prepared (HP) TiO2 catalysts were investigated by diffuse reflectance spectroscopy and quasi-Fermi level measurements. These powders were used for carrying out the photocatalytic oxidation of benzyl alcohol to benzaldehyde and CO2 in water; the selectivity for aldehyde formation was enhanced by the addition of small amounts of ethanol, a typical hole trap. The values of band gap, valence band and conduction band edges are almost identical for all the HP samples in which anatase phase is predominant, whereas appreciable differences can be noticed for an HP sample containing high amount of rutile phase. A comparative ATR-FTIR study of the HP cataly…

Settore ING-IND/24 - Principi Di Ingegneria ChimicaIn situ ATR-FTIR analysisPhotocatalysis AT-FTIR TiO2 Aromatic alcohols Aliphatic alcohol Selective oxidationTiO2Selective oxidationPhotocatalysisAromatic alcoholsAliphatic alcohol
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Selective photocatalytic oxidation of 4-substituted aromatic alcohols in water with rutile TiO2 prepared at room temperature

2009

WOS: 000264978500012

Settore ING-IND/24 - Principi Di Ingegneria ChimicaInorganic chemistrySubstituentAlcoholSelective phototooxidation Rutile TiO2PollutionCatalysischemistry.chemical_compoundchemistryRutileAlcohol oxidationPhotocatalysisEnvironmental ChemistryPartial oxidationSettore CHIM/07 - Fondamenti Chimici Delle TecnologieSelectivity
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Selective oxidation of phenol and benzoic acid in water via home-prepared TiO2 photocatalysts: Distribution of hydroxylation products

2012

Abstract The hydroxylation of phenol (a substrate containing an electron donor group) and of benzoic acid (a substrate containing an electron withdrawing group) has been carried out by the photocatalytic method in aqueous suspensions containing commercial or home prepared TiO2 samples. The aim of the work was to study the distribution of hydroxylation products when different photocatalysts were used and to correlate the selectivity to some physico-chemical features of the powders. The samples were characterized by X-ray diffraction, thermogravimetry, determination of crystalline phase percentage, specific surface area and zero charge point. The photoreactivity results indicate that the prod…

Settore ING-IND/24 - Principi Di Ingegneria ChimicaProcess Chemistry and TechnologyInorganic chemistryElectron donorCatalysisCatalysisHydroxylationchemistry.chemical_compoundchemistrySelective hydroxylation Product distribution Benzoic acid Phenol Heterogeneous photocatalysis Reaction pathways Kinetics TiO2PhotocatalysisPhenolPartial oxidationSettore CHIM/07 - Fondamenti Chimici Delle TecnologieSelectivityBenzoic acid
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Photocatalytic oxidation of nitrobenzene and phenylamine: Pathways and kinetics

2007

WOS: 000245150800018

Settore ING-IND/24 - Principi Di Ingegneria ChimicaReaction mechanismEnvironmental EngineeringAqueous solutionPartial oxidation nitrobenzene phenylamine heterogeneous photocatalysis reaction pathway kinetics TiOGeneral Chemical EngineeringNitrobenzeneKineticsInorganic chemistryPartial OxidationHeterogeneous PhotocatalysisMineralization (soil science)PhotochemistryReaction PathwayNitrobenzeneKineticschemistry.chemical_compoundAdsorptionchemistryPhotocatalysisTio2Partial oxidationPhenylamineBiotechnologyAIChE Journal
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