Energetics of the interaction of ethylamine and acidic sites of immobilized complexes on SH-modified silica gel

dc.creatorSimoni, JA
dc.creatorAiroldi, C
dc.creatorVieira, EFS
dc.creatorCestari, AR
dc.date2000
dc.date42156
dc.date2014-12-02T16:30:37Z
dc.date2015-11-26T17:40:14Z
dc.date2014-12-02T16:30:37Z
dc.date2015-11-26T17:40:14Z
dc.date.accessioned2018-03-29T00:21:53Z
dc.date.available2018-03-29T00:21:53Z
dc.identifierColloids And Surfaces A-physicochemical And Engineering Aspects. Elsevier Science Bv, v. 166, n. 41699, n. 109, n. 113, 2000.
dc.identifier0927-7757
dc.identifierWOS:000085981700012
dc.identifier10.1016/S0927-7757(99)00494-X
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/64790
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/64790
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/64790
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1286667
dc.descriptionInteractions of ethylamine from aqueous solutions on Sil-SM [thiol-modified silica gel containing complexed cations, where M = Ag(I), Hg(II), Zn(II), Cu(II) and Ni(II)] have been investigated. Using an isoperibolic calorimetric titration technique, the enthalpies evolved at different surface coverages were obtained with the corresponding interacting amount of ethylamine (n(int(i))) determined by using an isothermal calorimetric titration technique, specially developed for this purpose. The maximum capacities of interaction (N-s), molar enthalpies of interactions at different surface coverages (Delta(int(i))H(m)) and molar integral enthalpies of interaction for a monolayer (Delta(mon)H(m)) have been determined. The Delta(mon)H(m) values, taking into account the investigation of the interaction strengths between ethylamine and Sil-SM, suggest that the Pearson concept is the predominant mechanism in the behavior of the Sil-SM/amine adsorption processes. It is shown that the Delta(int(i))H(m) values are not constant with the surface coverage, thus the general tendency found earlier has been confirmed. (C) 2000 Elsevier Science B.V. All rights reserved.
dc.description166
dc.description41699
dc.description109
dc.description113
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationColloids And Surfaces A-physicochemical And Engineering Aspects
dc.relationColloid Surf. A-Physicochem. Eng. Asp.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectcalorimetry
dc.subjectsilica gel
dc.subjectadsorption
dc.subjectacidic sites
dc.subjectethylamine
dc.subjectDivalent-cations
dc.subjectNonaqueous Solvents
dc.subjectThermodynamic Data
dc.subjectChemisorption
dc.subjectLayer
dc.subjectPhase
dc.titleEnergetics of the interaction of ethylamine and acidic sites of immobilized complexes on SH-modified silica gel
dc.typeArtículos de revistas


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