Pore structure characterization of kaolin, metakaolin, and their acid-treated products using small-angle X-ray scattering

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dc.contributor.authorVollet, Dimas R. [UNESP]
dc.contributor.authorMacedo, JoséCarlos D.
dc.contributor.authorMascarenhas, Yvonne P.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionSão Paulo. Cx. P. 369
dc.date.accessioned2014-05-27T11:17:56Z
dc.date.available2014-05-27T11:17:56Z
dc.date.issued1994-02-01
dc.description.abstractPore structure of dealuminated kaolin and metakaolin was studied by small-angle X-ray scattering (SAXS). Both parent kaolin and metakaolin have about 10% of the total pore volume provided by globular pores with 105 Å mean pore size. Their surface area is about 14 m2/g. Acid dealumination of kaolin causes an increase of its globular pore volume without an appreciable change in the mean pore size, its surface area increasing up to about 90 m2/g. Acid dealumination of metakaolin enhances the globular pore volume, although there is generation of slit-shaped pores with a narrow thickness distribution whose mean value is 14 Å. This interlayer spacing causes an increase in surface area of about 190 m2/g by SAXS. © 1994.en
dc.description.affiliationDepartamento de Física IGCE. Universidade Estadual Paulista. Cx. P. 178, Rio Claro, SP CEP 13500-230
dc.description.affiliationIFQSC. Universidade São Paulo. Cx. P. 369, São Carlos, SP CEP 13560-970
dc.description.affiliationUnespDepartamento de Física IGCE. Universidade Estadual Paulista. Cx. P. 178, Rio Claro, SP CEP 13500-230
dc.format.extent397-404
dc.identifierhttp://dx.doi.org/10.1016/0169-1317(94)90035-3
dc.identifier.citationApplied Clay Science, v. 8, n. 6, p. 397-404, 1994.
dc.identifier.doi10.1016/0169-1317(94)90035-3
dc.identifier.issn0169-1317
dc.identifier.scopus2-s2.0-0028184118
dc.identifier.urihttp://hdl.handle.net/11449/64464
dc.language.isoeng
dc.relation.ispartofApplied Clay Science
dc.relation.ispartofjcr3.641
dc.relation.ispartofsjr0,992
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectdealumination
dc.subjectkaolin
dc.subjectpore structure
dc.subjectsmall angle X-ray scattering
dc.subjectAcids
dc.subjectCharacterization
dc.subjectClay products
dc.subjectPorosity
dc.subjectSurface properties
dc.subjectX ray analysis
dc.subjectAcid dealumination
dc.subjectAcid treatment
dc.subjectGlobular pore volume
dc.subjectMetakaolin
dc.subjectSmall angle X ray scattering (SAXS)
dc.subjectKaolin
dc.titlePore structure characterization of kaolin, metakaolin, and their acid-treated products using small-angle X-ray scatteringen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Geociências e Ciências Exatas, Rio Claropt

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