Adsorption of Metal Ions on Novel 3-n-Propyl(Methylpyridinium) Silsesquioxane Chloride Polymers Surface. Study of Heterogeneous Equilibrium at the Solid-Solution Interface

dc.creatorMagosso, HA
dc.creatorFattori, N
dc.creatorKholin, YV
dc.creatorGushiken, Y
dc.date2009
dc.date2014-08-01T18:18:28Z
dc.date2015-11-26T17:59:49Z
dc.date2014-08-01T18:18:28Z
dc.date2015-11-26T17:59:49Z
dc.date.accessioned2018-03-29T00:42:12Z
dc.date.available2018-03-29T00:42:12Z
dc.identifierJournal Of The Brazilian Chemical Society. Soc Brasileira Quimica, v. 20, n. 4, n. 744, n. 752, 2009.
dc.identifier0103-5053
dc.identifierWOS:000266403400018
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/76906
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/76906
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1291781
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionPolymers Si3Py(+)Cl(-) ( A) and Si4Py(+)Cl(-) (B), 3-n-propyl(3-methylpyridinium) silsesquioxane and 3-n-propyl(4-methylpyridinium) silsesquioxane chlorides, respectively, were prepared by the sol-gel processing method. The ion exchange capacities (mmol g(-1)) were 0.90 and 0.81 for ( A) and ( B) respectively. Considering the reaction nSiPy(+)Cl((s))(-) + M((sln))(2+) + 2Cl((sln))(-) reversible arrow (SiPy(+))(n)MCl(2+n)((s))(n-), the values of the stepwise equilibrium constants obtained were: (A) Cu(II): logK((2))(1)=4.14(0.03), logK((2))(2)= 2.91(0.04); Zn(II), logK((2))(1)= 3.3(0.3), logK((2))(2)= 4.9(0.3); (B) Cu(II): logK((2))(1)= 3.82(0.03), logK((2))(2)= 3.00(0.04); Zn(II), logK((2))(1)= 3.93(0.03), logK((2))(2)= 3.55(0.08), being K((2))(1) and K((2))(2) the equilibrium constants for adsorption of the species MCl(4)(2-) and MCl(3)(-), respectively. For adsorption of Zn(II) on Si3Py(+)Cl(-), K((2))(2) > K((2))(1), indicating positive cooperativity, i.e., the adsorption of MCl42- enhances the adsorption of MCl(3)(-) species on the adsorbent surface. For the other cations, K((2))(1) > K((2))(2), indicating that adsorption of MCl(4)(2-) depresses the adsorption of MCl(3)(-) species, indicating negative cooperativity.
dc.description20
dc.description4
dc.description744
dc.description752
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFAPESP [00-11103-5]
dc.languageen
dc.publisherSoc Brasileira Quimica
dc.publisherSao Paulo
dc.publisherBrasil
dc.relationJournal Of The Brazilian Chemical Society
dc.relationJ. Braz. Chem. Soc.
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectmethylpyridinium
dc.subjectsilsesquioxane modified polymer
dc.subjectadsorption
dc.subjectstability constants at heterogeneous surface
dc.subjectsolid-solution interface
dc.subjectNuclear Magnetic-resonance
dc.subjectC-13 Cross-polarization
dc.subjectAcetate Hybrid Material
dc.subjectSilica-gel Surface
dc.subjectEthanol Solutions
dc.subjectAqueous-solution
dc.subjectPreconcentration
dc.subjectComplexes
dc.subjectHalides
dc.subjectPolysilsesquioxanes
dc.titleAdsorption of Metal Ions on Novel 3-n-Propyl(Methylpyridinium) Silsesquioxane Chloride Polymers Surface. Study of Heterogeneous Equilibrium at the Solid-Solution Interface
dc.typeArtículos de revistas


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