Kinetic modeling of adsorption of di-2-pyridylketone salicyloylhydrazone on silica gel

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dc.contributor.authorAntonio P.
dc.contributor.authorIha K.
dc.contributor.authorSuarez-Iha M.E.V.
dc.date.accessioned2024-03-13T01:40:09Z
dc.date.available2024-03-13T01:40:09Z
dc.date.issued2007
dc.description.abstractThe kinetics of DPKSH (di-2-pyridylketone salicyloylhydrazone) adsorption onto silica gel has been investigated at (25 ± 1) ° C and pH 1 and 4.7. The kinetics of adsorption of DPKSH is discussed using three kinetic models, the first-order Lagergren model, the pseudo-second-order model, and the intraparticle diffusion model. The adsorption of DPKSH, at pH 1 and 4.7, onto silica gel proceeds according to the pseudo-second-order model and the correlation coefficients were very close to 1. The intraparticle diffusion of DPKSH molecules within the silica gel particles was identified as the rate-limiting step. The parameters of the pseudo-second-order model are qmax, calc = 1.02 × 10-4 and 1.5 × 10-4 g DPKSH/g silica; k2 = 3.01 × 104 and 9.67 × 104 h-1 g silica/g DPKSH, respectively, for pH 1 and 4.7. © 2006 Elsevier Inc. All rights reserved.
dc.description.firstpage24
dc.description.issuenumber1
dc.description.lastpage28
dc.description.volume307
dc.identifier.doi10.1016/j.jcis.2006.11.031
dc.identifier.issn0021-9797
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37663
dc.relation.ispartofJournal of Colloid and Interface Science
dc.rightsAcesso Restrito
dc.subject.otherlanguageAdsorption
dc.subject.otherlanguageDPKSH
dc.subject.otherlanguageKinetic models
dc.subject.otherlanguageSilica gel
dc.titleKinetic modeling of adsorption of di-2-pyridylketone salicyloylhydrazone on silica gel
dc.typeArtigo
local.scopus.citations35
local.scopus.eid2-s2.0-33847044809
local.scopus.subjectDi-2-pyridylketone salicyloylhydrazone (DPKSH)
local.scopus.subjectIntraparticle diffusion
local.scopus.subjectKinetic models
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33847044809&origin=inward
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