Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/195820
Full metadata record
DC FieldValueLanguage
dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.typeArtigo de periódicopt_BR
dc.titleHybrid Aniline/silica Xerogel Cation Adsorption And Thermodynamics Of Interaction.pt_BR
dc.contributor.authorPavan, F Apt_BR
dc.contributor.authorLima, I Spt_BR
dc.contributor.authorBenvenutti, E Vpt_BR
dc.contributor.authorGushikem, Ypt_BR
dc.contributor.authorAiroldi, Cpt_BR
unicamp.authorF A Pavan, Instituto de Química, Universidade Estadual de Campinas, Caixa Postal 6154, 13084-971 Campinas, São Paulo, Brazil.pt_BR
unicamp.author.externalI S Lima,pt
unicamp.author.externalE V Benvenutti,pt
unicamp.author.externalY Gushikem,pt
unicamp.author.externalC Airoldi,pt
dc.description.abstractAniline groups chemically immobilized on silica through the sol-gel process were employed to extract divalent nickel and manganese from aqueous solutions at room temperature. The maximum adsorption capacity of the xerogel was studied from adsorption isotherms using a batch technique. The isotherms obtained were adjusted following the Langmuir equation. The xerogel adsorbent appears to have better affinity for nickel than manganese. From calorimetric titration, thermodynamic data on cation/nitrogen basic atom interaction in the solid/liquid interface were determined. The enthalpic values, -0.46 +/- 0.02 and -.029 +/- 0.02 kJ mol(-1) for nickel and manganese, respectively, are in agreement with the low availability of the basic nitrogen atom on the aniline group and also the possible steric hindrance of the phenyl group bonded to nitrogen. However, thermodynamics indicated the existence of favorable conditions for such cation-nitrogen interactions.en
dc.relation.ispartofJournal Of Colloid And Interface Sciencept_BR
dc.relation.ispartofabbreviationJ Colloid Interface Scipt_BR
dc.date.issued2004-Julpt_BR
dc.identifier.citationJournal Of Colloid And Interface Science. v. 275, n. 2, p. 386-91, 2004-Jul.pt_BR
dc.language.isoengpt_BR
dc.description.volume275pt_BR
dc.description.firstpage386-91pt_BR
dc.rightsfechadopt_BR
dc.rights.holderCopyright 2004 Elsevier Inc.pt_BR
dc.sourcePubMedpt_BR
dc.identifier.issn0021-9797pt_BR
dc.identifier.doi10.1016/j.jcis.2004.03.006pt_BR
dc.identifier.urlhttp://www.ncbi.nlm.nih.gov/pubmed/15178263pt_BR
dc.date.available2015-11-27T12:58:12Z-
dc.date.accessioned2015-11-27T12:58:12Z-
dc.description.provenanceMade available in DSpace on 2015-11-27T12:58:12Z (GMT). No. of bitstreams: 1 pmed_15178263.pdf: 217153 bytes, checksum: c30b6504a1f768f1c28722d691a8ba0f (MD5) Previous issue date: 2004en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/195820-
dc.identifier.idPubmed15178263pt_BR
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
pmed_15178263.pdf212.06 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.