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Please use this identifier to cite or link to this item: https://olympias.lib.uoi.gr/jspui/handle/123456789/8413
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dc.contributor.authorChristoforidis, K. C.en
dc.contributor.authorLouloudi, M.en
dc.contributor.authorMilaeva, E. R.en
dc.contributor.authorDeligiannakis, Y.en
dc.date.accessioned2015-11-24T16:41:24Z-
dc.date.available2015-11-24T16:41:24Z-
dc.identifier.issn0021-9517-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/8413-
dc.rightsDefault Licence-
dc.subjectheterogeneous catalysten
dc.subjectepren
dc.subjectdr-uv-visen
dc.subjectferrylen
dc.subjectcompound ien
dc.subjecthigh-valent ironen
dc.subjectfe-porphyrinen
dc.subjectimmobilizeden
dc.subjectpcpen
dc.subjectcation radical complexesen
dc.subjectelectron-paramagnetic-resonanceen
dc.subjecthorseradish-peroxidase compounden
dc.subjectwater-soluble iron(iii)en
dc.subjecthydrogen-peroxideen
dc.subjectiron-porphyrinen
dc.subjectoxidative-degradationen
dc.subjectchlorinated phenolsen
dc.subjecthumic substancesen
dc.subjectfentons reagenten
dc.titleMechanism of catalytic decomposition of pentachlorophenol by a highly recyclable heterogeneous SiO(2)-[Fe-porphyrin] catalysten
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.jcat.2009.12.016-
heal.identifier.secondary<Go to ISI>://000275966100019-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0021951709004357/1-s2.0-S0021951709004357-main.pdf?_tid=3d10ded30d3007d49d3d8afab3a33232&acdnat=1333034267_4f49e985966bab3081fc37b58e8563ce-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.publicationDate2010-
heal.abstractA novel heterogenized FeR(4)P-SiO(2) shows enhanced catalytic efficiency for PCP conversion vs. the homogeneous FeR(4)P catalyst. The heterogenized FeR(4)P-SiO(2) catalyst is highly recyclable in the presence of imidazole in solution. EPR and DR-UV-Vis data provide direct evidence that high-valent iron species [R(4)P(+center dot)Fe(IV)=O] are formed in the heterogenized FeR(4)P-SiO(2) system. The electron spin density of the al, cation radical (Por(+center dot)) is mainly localised on the tetrapyrole frame, and this results in the observed weak magnetic coupling between the S = 1 oxo-ferryl moiety (Fe(IV)=O) and the S = 1/2 porphyrin cation radical (Por(+center dot)). A catalytic cycle mechanism is suggested. Accordingly, the reduction in [R(4)P(+center dot)Fe(IV)=O] can proceed via a substrate molecule, in a one electron-transfer, thus producing [R(4)PFe(IV)] plus a radical entity derived from the substrate. Then, a second electron-transfer to [R(4)PFe(IV)] leads to the regeneration of the initial R(4)PFe(III) state. This second electron can originate from either a substrate molecule or a radical substrate species. (C) 2009 Elsevier Inc. All rights reserved.en
heal.publisherElsevieren
heal.journalNameJournal of Catalysisen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
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