Thermal behaviour of intercalated 8-hydroxyquinoline (oxine) in montmorillonite clay

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorPastre, I. A.
dc.creatorOliveria, I. D.
dc.creatorMoitinho, ABS
dc.creatorde Souza, G. R.
dc.creatorIonashiro, E. Y.
dc.creatorFertonani, F. L.
dc.date2014-05-20T15:24:14Z
dc.date2016-10-25T17:58:23Z
dc.date2014-05-20T15:24:14Z
dc.date2016-10-25T17:58:23Z
dc.date2004-01-01
dc.date.accessioned2017-04-05T23:46:13Z
dc.date.available2017-04-05T23:46:13Z
dc.identifierJournal of Thermal Analysis and Calorimetry. Dordrecht: Kluwer Academic Publ, v. 75, n. 2, p. 661-669, 2004.
dc.identifier1388-6150
dc.identifierhttp://hdl.handle.net/11449/34873
dc.identifierhttp://acervodigital.unesp.br/handle/11449/34873
dc.identifier10.1023/B:JTAN.0000027160.19388.0c
dc.identifierWOS:000189377000038
dc.identifierhttp://dx.doi.org/10.1023/B:JTAN.0000027160.19388.0c
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/878713
dc.descriptionThe composite montmorillonite-8-hydroxyquinoline (Swy-1-8-HQ) was prepared by two different processes and studied by using thermogravimetric analysis (TG/DTG and DSC), as well as helpful techniques as fluorescence in the UV-visible region and X-ray diffraction. The composites developed fluorescent appearance, however with quantum poor efficiency and they exhibited distinct TG and DSC thermal behavior. The fluorescence data of spectra associated to the TG/DT curves allowed to suggest that the 8-HQ was present in the composites in two different circumstances: 1 - intercalated in the interlayer spaces (Swy-1-8-HQ2), rigidly associated to the Substrate feasible as a monolayer with the aromatic rings parallel to the silica layer; and/or, 2 - adsorbed on the Surface (Swy-1-8-HQ1), either as a bilayer formation or tilting of the molecules to the silicate layer sheet. All results confirmed above are in agreement with X-ray diffraction patterns, once the interlayer space increases when 8-HQ is incorporated. The experimental results confirm the formation of the composites in agreement with the method used in the preparation.
dc.languageeng
dc.publisherKluwer Academic Publ
dc.relationJournal of Thermal Analysis and Calorimetry
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectDSC
dc.subjectmontmorillonite
dc.subjectoxine
dc.subjectTG/DTG
dc.subjectX-ray diffraction
dc.titleThermal behaviour of intercalated 8-hydroxyquinoline (oxine) in montmorillonite clay
dc.typeOtro


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