Publication:
EPR of O2-Radicals in the Zeolites NH4NaY and NH4CaA

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dc.authorscopusid35555793900
dc.authorscopusid6602930891
dc.contributor.authorKöksal, F.
dc.contributor.authorUcun, F.
dc.date.accessioned2020-06-21T09:16:22Z
dc.date.available2020-06-21T09:16:22Z
dc.date.issued1998
dc.departmentOndokuz Mayıs Üniversitesien_US
dc.department-temp[Köksal] Fevzi, Department of Physics, Ondokuz Mayis University Faculty of Science and Arts, Samsun, Turkey; [Ucun] Fatih, Department of Physics, Süleyman Demirel Üniversitesi, Isparta, Isparta, Turkeyen_US
dc.description.abstractActivated and non-activated states of the zeolites NH<inf>4</inf>NaY and NH<inf>4</inf>CaA, and their NH+<inf>4</inf> forms were prepared with an (NH<inf>4</inf>)<inf>2</inf>SO<inf>4</inf> solution and were investigated by EPR after γ-irradiation. The formed radicals were attributed to O-<inf>2</inf> supposed to be trapped near a trigonally coordinated framework of 27A1 (I = 5/2). Anisotropic O-<inf>2</inf> spectra were observed, consisting of hyperfine structure due to the 27A1 framework, even at room temperature. This was attributed to the scarceness of NH+<inf>4</inf> sites or trap sites because of the preparation of the NH+<inf>4</inf> forms of the zeolites with an (NH<inf>4</inf>)<inf>2</inf>SO<inf>4</inf> solution. The crystal field splittings were found and interpreted.en_US
dc.identifier.doi10.1515/zna-1998-1204
dc.identifier.endpage954en_US
dc.identifier.issn0932-0784
dc.identifier.issn1865-7109
dc.identifier.issue12en_US
dc.identifier.scopus2-s2.0-0039988103
dc.identifier.scopusqualityQ3
dc.identifier.startpage951en_US
dc.identifier.urihttps://doi.org/10.1515/zna-1998-1204
dc.identifier.volume53en_US
dc.identifier.wosqualityQ3
dc.language.isoenen_US
dc.publisherVerlag der Zeitschrift für Naturforschungen_US
dc.relation.ispartofZeitschrift Für Naturforschung Section A-A Journal of Physical Sciencesen_US
dc.relation.journalZeitschrift fur Naturforschung - Section A Journal of Physical Sciencesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectEPRen_US
dc.subjectNH4NaYen_US
dc.subjectNH4CaAen_US
dc.subjectO-2en_US
dc.subjectZeolitesen_US
dc.titleEPR of O2-Radicals in the Zeolites NH4NaY and NH4CaAen_US
dc.typeArticleen_US
dspace.entity.typePublication

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