CHEMISORPTION OF SOME DIVALENT-CATIONS ON SILICA MODIFIED THROUGH THE REACTION OF PENTANE-2,4-DIONE WITH 3-PROPYLETHYLENEDIAMINE SILICA-GEL

dc.creatorESPINOLA, JGP
dc.creatorDEFREITAS, JMP
dc.creatorDEOLIVEIRA, SF
dc.creatorAIROLDI, C
dc.date1992
dc.date43040
dc.date2014-12-16T11:34:53Z
dc.date2015-11-26T18:03:13Z
dc.date2014-12-16T11:34:53Z
dc.date2015-11-26T18:03:13Z
dc.date.accessioned2018-03-29T00:45:03Z
dc.date.available2018-03-29T00:45:03Z
dc.identifierColloids And Surfaces. Elsevier Science Bv, v. 68, n. 4, n. 261, n. 266, 1992.
dc.identifier0166-6622
dc.identifierWOS:A1992KB79500004
dc.identifier10.1016/0166-6622(92)80211-J
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/63057
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/63057
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/63057
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1292467
dc.descriptionThe reaction of 3-propylethylenediamine groups covalently bonded to silica gel with pentane-2,4-dione in benzene resulted in a modified surface having 11.4 . 10(-4) mol g-1 of ligand sites which adsorb the divalent cations Co2+, Ni2+, Cu2+ and Zn2+ from ethanol solution with maximum adsorptions of 5.0 . 10(-4) mol g-1, 2.0 . 10(-4) mol g-1, 5.0 . 10(-4) mol g-1 and 5.9 . 10(-4) mol g-1, respectively. The adsorption isotherms are very similar in shape for all the cations and conform to the Langmuir model. The complexes formed on the surface have a molar composition of one cation to two anchored groups of Schiff bases and the geometries of the complexes are similar to those obtained in solution.
dc.description68
dc.description4
dc.description261
dc.description266
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationColloids And Surfaces
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectCHEMISORPTION
dc.subjectIMMOBILIZATION
dc.subject3-PROPYLETHYLENEDIAMINE SILICA GEL
dc.subjectSCHIFF BASE
dc.subjectSILICA GEL
dc.subjectMetal-ions
dc.subjectAdsorption
dc.subjectComplexes
dc.subjectChlorides
dc.titleCHEMISORPTION OF SOME DIVALENT-CATIONS ON SILICA MODIFIED THROUGH THE REACTION OF PENTANE-2,4-DIONE WITH 3-PROPYLETHYLENEDIAMINE SILICA-GEL
dc.typeArtículos de revistas


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