n-Alkylmonoamine into crystalline lamellar titanium phenylphosphonate - Intercalation enthalpies, Gibbs free energies and entropies

dc.creatorRuiz, VSO
dc.creatorAiroldi, C
dc.date2003
dc.date2014-11-14T08:36:21Z
dc.date2015-11-26T17:14:04Z
dc.date2014-11-14T08:36:21Z
dc.date2015-11-26T17:14:04Z
dc.date.accessioned2018-03-29T00:02:24Z
dc.date.available2018-03-29T00:02:24Z
dc.identifierJournal Of Thermal Analysis And Calorimetry. Kluwer Academic Publ, v. 71, n. 2, n. 459, n. 465, 2003.
dc.identifier1388-6150
dc.identifierWOS:000181454400015
dc.identifier10.1023/A:1022891523593
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/63362
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/63362
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/63362
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1281724
dc.descriptionCrystalline lamellar titanium phenylphosphonate was intercalated with n-alkylmonoamines, H3C(CH2)(n)-NH2 (n=0 to 3), which decomposed on heating in four distinct stages. The lamellar compound was calorimetrically titrated with ethanolic amine solution at 298.15+/-0.02 K and the enthalpy, Gibbs free energy and entropy were calculated. With the exception of butylamine, the enthalpic values increased with the number of carbon atoms in the amine chain, as -16.20+/-0.22; -18.70+/-0.19; -23.70+/-0.24 and -18.30+/-0.22 kJ mol(-1), from n=0 to 3. The exothermic enthalpic values reflected a favorable energetic process of intercalation, when the solvated ethanol molecules on inorganic matrix are progressively substituted by solute. The negative Gibbs free energy results supported the spontaneity of the reactions and the positive favorable entropic values are in agreement with the increase of solvent molecules in the reaction medium, as the amine becomes bonded to the crystalline lamellar inorganic matrix.
dc.description71
dc.description2
dc.description459
dc.description465
dc.languageen
dc.publisherKluwer Academic Publ
dc.publisherDordrecht
dc.publisherHolanda
dc.relationJournal Of Thermal Analysis And Calorimetry
dc.relationJ. Therm. Anal. Calorim.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectamine
dc.subjectenthalpy
dc.subjectintercalation
dc.subjectphenylphosphonate
dc.subjectCalorimetric Data
dc.subjectPowder Structure
dc.subjectSilica-gel
dc.subjectPhosphonate
dc.subjectAlkylamines
dc.subjectBehavior
dc.titlen-Alkylmonoamine into crystalline lamellar titanium phenylphosphonate - Intercalation enthalpies, Gibbs free energies and entropies
dc.typeArtículos de revistas


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