Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/5217
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dc.contributor.authorAzenha, M. E. D. G.-
dc.contributor.authorMiguel, Maria da Graça-
dc.contributor.authorFormosinho, S. J.-
dc.contributor.authorBurrows, H. D.-
dc.date.accessioned2008-09-01T15:05:57Z-
dc.date.available2008-09-01T15:05:57Z-
dc.date.issued2001en_US
dc.identifier.citationJournal of Molecular Structure. 563-564:(2001) 439-442en_US
dc.identifier.urihttps://hdl.handle.net/10316/5217-
dc.description.abstractLuminescence spectroscopy of solids at 77 K has been used to characterise the uranium(VI) species incorporated into [alpha]-alumina, [gamma]-alumina and zeolites Y and ZSM-20 by adsorption from solution and into ZSM-5 by chemical synthesis. With uranyl adsorbed from nitrate solutions onto [alpha]- and [gamma]-aluminas, the luminescence measurements show the dominant uranium species is schoepite, UO3·xH2O, in agreement with results from X-ray diffraction and Raman spectroscopy. With uranyl acetate, there are indications that a crystalline acetate species is also present. With zeolite-Y and ZSM-20, the main species is a dimer. In addition, some monomeric [UO2(H2O)5]2+ is also present. With ZSM-5, although this is not observed in X-ray diffraction, the luminescence spectrum shows the presence of a species, similar to the schoepite seen with the aluminas. It is suggested that this may be due both to closely related polymeric species, and to uranyl anions, such as [UO2(OH)4]2- and [UO2(OH)3]-.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6TGS-435M5SD-2D/1/1fcff58939e013c8fdee4bba2d901a3ben_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectUranyl ionen_US
dc.subjectAluminasen_US
dc.subjectZeolitesen_US
dc.subjectAdsorptionen_US
dc.subjectLuminescence spectroscopyen_US
dc.titleThe characterisation by luminescence spectroscopy of uranium(VI) incorporated into zeolites and aluminasen_US
dc.typearticleen_US
dc.identifier.doi10.1016/S0022-2860(00)00829-2-
uc.controloAutoridadeSim-
item.fulltextCom Texto completo-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
item.languageiso639-1en-
item.openairetypearticle-
item.cerifentitytypePublications-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.orcid0000-0002-9495-2592-
crisitem.author.orcid0000-0002-1601-5501-
crisitem.author.orcid0000-0001-6607-0026-
crisitem.author.orcid0000-0003-3127-2298-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
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