Physical and catalytic characterization of smectites from Boa-Vista, Paraíba, Brazil

Detalhes bibliográficos
Autor(a) principal: Rodrigues,M. G. F.
Data de Publicação: 2003
Tipo de documento: Relatório
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132003000300007
Resumo: The original crystalline structure of clay minerals can be altered in a controlled way, through acid or thermal treatments, resulting then in suitable products to be used as catalysts. This paper aims to characterize the red smectite clays of Boa-Vista, Paraíba (Brazil) in their natural form, and after chemical, thermal and acid treatments by X-ray fluorescence, differential thermal analysis, dynamic X-ray diffraction, classic X-ray diffraction analysis, scanning electron microscopy, nitrogen adsorption and model reaction. The results show that acid treatment partially altered the structure of the montimorillonite. An important increase in the surface area of the solid obtained was observed. The obtained reaction for the treated material showed that the clay was more acid than the natural one, yielding a better catalytic activity.
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spelling Physical and catalytic characterization of smectites from Boa-Vista, Paraíba, Brazilcatalystsmectitechemical treatmentthermal treatmentThe original crystalline structure of clay minerals can be altered in a controlled way, through acid or thermal treatments, resulting then in suitable products to be used as catalysts. This paper aims to characterize the red smectite clays of Boa-Vista, Paraíba (Brazil) in their natural form, and after chemical, thermal and acid treatments by X-ray fluorescence, differential thermal analysis, dynamic X-ray diffraction, classic X-ray diffraction analysis, scanning electron microscopy, nitrogen adsorption and model reaction. The results show that acid treatment partially altered the structure of the montimorillonite. An important increase in the surface area of the solid obtained was observed. The obtained reaction for the treated material showed that the clay was more acid than the natural one, yielding a better catalytic activity.Associação Brasileira de Cerâmica2003-09-01info:eu-repo/semantics/reportinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132003000300007Cerâmica v.49 n.311 2003reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0366-69132003000300007info:eu-repo/semantics/openAccessRodrigues,M. G. F.eng2004-04-08T00:00:00Zoai:scielo:S0366-69132003000300007Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2004-04-08T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Physical and catalytic characterization of smectites from Boa-Vista, Paraíba, Brazil
title Physical and catalytic characterization of smectites from Boa-Vista, Paraíba, Brazil
spellingShingle Physical and catalytic characterization of smectites from Boa-Vista, Paraíba, Brazil
Rodrigues,M. G. F.
catalyst
smectite
chemical treatment
thermal treatment
title_short Physical and catalytic characterization of smectites from Boa-Vista, Paraíba, Brazil
title_full Physical and catalytic characterization of smectites from Boa-Vista, Paraíba, Brazil
title_fullStr Physical and catalytic characterization of smectites from Boa-Vista, Paraíba, Brazil
title_full_unstemmed Physical and catalytic characterization of smectites from Boa-Vista, Paraíba, Brazil
title_sort Physical and catalytic characterization of smectites from Boa-Vista, Paraíba, Brazil
author Rodrigues,M. G. F.
author_facet Rodrigues,M. G. F.
author_role author
dc.contributor.author.fl_str_mv Rodrigues,M. G. F.
dc.subject.por.fl_str_mv catalyst
smectite
chemical treatment
thermal treatment
topic catalyst
smectite
chemical treatment
thermal treatment
description The original crystalline structure of clay minerals can be altered in a controlled way, through acid or thermal treatments, resulting then in suitable products to be used as catalysts. This paper aims to characterize the red smectite clays of Boa-Vista, Paraíba (Brazil) in their natural form, and after chemical, thermal and acid treatments by X-ray fluorescence, differential thermal analysis, dynamic X-ray diffraction, classic X-ray diffraction analysis, scanning electron microscopy, nitrogen adsorption and model reaction. The results show that acid treatment partially altered the structure of the montimorillonite. An important increase in the surface area of the solid obtained was observed. The obtained reaction for the treated material showed that the clay was more acid than the natural one, yielding a better catalytic activity.
publishDate 2003
dc.date.none.fl_str_mv 2003-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/report
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format report
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132003000300007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132003000300007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0366-69132003000300007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.49 n.311 2003
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
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