Приказ основних података о документу

dc.creatorTomić, Zorica P.
dc.creatorLogar, Vesna P.
dc.creatorBabić, Biljana M.
dc.creatorRogan, Jelena
dc.creatorMakreski, Petre
dc.date.accessioned2021-03-10T11:34:24Z
dc.date.available2021-03-10T11:34:24Z
dc.date.issued2011
dc.identifier.issn1386-1425
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/1876
dc.description.abstractBentonite samples collected from vicinity of Petrovac and Aleksinac were treated with different sulfuric acid molarities. Acid attack dissolved the octahedral sheets by interlayer and edge attack. The effects of the H2SO4 acid caused an exchange of Al3+, Fe3+ and Mg2+ with H. ions leading to a modification of the smectite crystalline structure. The Mg and Fe substitution in the octahedral sheets promoted the dispersion of corresponding layers and formation of amorphous silicon. The activated bentonites, after the treatment of sulfuric acid, exhibited a lower cation-exchange capacity (CEC)and significant increase of specific surface area from 6 to 387 m(2) g(-1) (bentonite from Petrovac) and from 11 to 306 m(2) g(-1) (bentonite from Aleksinac). The acid reaction caused a splitting of particles within the octahedral sheet which led to an increase in specific surface area and decrease in CEC in both bentonites.en
dc.publisherPergamon-Elsevier Science Ltd, Oxford
dc.relationMinistry of Science and Technological Development of the Republic of Serbia
dc.relationMinistry of Education and Science of Macedonia
dc.rightsrestrictedAccess
dc.sourceSpectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy
dc.subjectBentoniteen
dc.subjectAcid activationen
dc.subjectSmectiteen
dc.subjectCation exchange capacityen
dc.subjectSpecific surface areaen
dc.titleComparison of structural, textural and thermal characteristics of pure and acid treated bentonites from Aleksinac and Petrovac (Serbia)en
dc.typearticle
dc.rights.licenseARR
dc.citation.epage395
dc.citation.issue1
dc.citation.other82(1): 389-395
dc.citation.rankM22
dc.citation.spage389
dc.citation.volume82
dc.identifier.doi10.1016/j.saa.2011.07.068
dc.identifier.pmid21824809
dc.identifier.scopus2-s2.0-80052813441
dc.identifier.wos000295956500057
dc.type.versionpublishedVersion


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