Preparation and characterization of lanthanum palygorskite clays as acid catalysts

Detalhes bibliográficos
Autor(a) principal: Melo, Dulce Maria de Araújo
Data de Publicação: 2002
Outros Autores: Ruíz, Juan Alberto Chavez, Melo, Marcus Antônio de Freitas, Vitor Sobrinho, Eledir, Martinelli, Antonio Eduardo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/31465
Resumo: Palygorskite clays containing 2, 4, 6 or 10% lanthanum (w/w) were prepared by ion-exchange from acid-leached natural clays. Samples were characterized by chemical and thermogravimetric analysis, X-ray diffraction, infrared spectroscopy, and N2 adsorption. Isopropyl alcohol was transformed in order to improve the acid behavior of the material. The introduction of La3+ did not change the structure of the palygorskite. Surface areas as high as 177.6 m2 g−1 were measured for catalysts containing 2% lanthanum. This material also showed a very good activity for alcohol dehydration
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spelling Melo, Dulce Maria de AraújoRuíz, Juan Alberto ChavezMelo, Marcus Antônio de FreitasVitor Sobrinho, EledirMartinelli, Antonio Eduardo2021-02-10T18:45:36Z2021-02-10T18:45:36Z2002-10-07MELO, Dulce Maria de Araújo; RUIZ, Juan Alberto Chavez; MELO, Marcus Antônio de Freitas; VITOR SOBRINHO, Eledir; MARTINELLI, Antonio Eduardo. Preparation and characterization of lanthanum palygorskite clays as acid catalysts. Journal Of Alloys And Compounds, [S.L.], v. 344, n. 1-2, p. 352-355, out. 2002. Elsevier. http://dx.doi.org/10.1016/s0925-8388(02)00384-5. Disponível em: https://www.sciencedirect.com/science/article/pii/S0925838802003845. Acesso em: 25 nov. 2020.0925-8388https://repositorio.ufrn.br/handle/123456789/3146510.1016/S0925-8388(02)00384-5ElsevierAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessLanthanumPalygorskiteMineral claysCharacterizationPreparation and characterization of lanthanum palygorskite clays as acid catalystsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePalygorskite clays containing 2, 4, 6 or 10% lanthanum (w/w) were prepared by ion-exchange from acid-leached natural clays. Samples were characterized by chemical and thermogravimetric analysis, X-ray diffraction, infrared spectroscopy, and N2 adsorption. Isopropyl alcohol was transformed in order to improve the acid behavior of the material. The introduction of La3+ did not change the structure of the palygorskite. Surface areas as high as 177.6 m2 g−1 were measured for catalysts containing 2% lanthanum. 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dc.title.pt_BR.fl_str_mv Preparation and characterization of lanthanum palygorskite clays as acid catalysts
title Preparation and characterization of lanthanum palygorskite clays as acid catalysts
spellingShingle Preparation and characterization of lanthanum palygorskite clays as acid catalysts
Melo, Dulce Maria de Araújo
Lanthanum
Palygorskite
Mineral clays
Characterization
title_short Preparation and characterization of lanthanum palygorskite clays as acid catalysts
title_full Preparation and characterization of lanthanum palygorskite clays as acid catalysts
title_fullStr Preparation and characterization of lanthanum palygorskite clays as acid catalysts
title_full_unstemmed Preparation and characterization of lanthanum palygorskite clays as acid catalysts
title_sort Preparation and characterization of lanthanum palygorskite clays as acid catalysts
author Melo, Dulce Maria de Araújo
author_facet Melo, Dulce Maria de Araújo
Ruíz, Juan Alberto Chavez
Melo, Marcus Antônio de Freitas
Vitor Sobrinho, Eledir
Martinelli, Antonio Eduardo
author_role author
author2 Ruíz, Juan Alberto Chavez
Melo, Marcus Antônio de Freitas
Vitor Sobrinho, Eledir
Martinelli, Antonio Eduardo
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Melo, Dulce Maria de Araújo
Ruíz, Juan Alberto Chavez
Melo, Marcus Antônio de Freitas
Vitor Sobrinho, Eledir
Martinelli, Antonio Eduardo
dc.subject.por.fl_str_mv Lanthanum
Palygorskite
Mineral clays
Characterization
topic Lanthanum
Palygorskite
Mineral clays
Characterization
description Palygorskite clays containing 2, 4, 6 or 10% lanthanum (w/w) were prepared by ion-exchange from acid-leached natural clays. Samples were characterized by chemical and thermogravimetric analysis, X-ray diffraction, infrared spectroscopy, and N2 adsorption. Isopropyl alcohol was transformed in order to improve the acid behavior of the material. The introduction of La3+ did not change the structure of the palygorskite. Surface areas as high as 177.6 m2 g−1 were measured for catalysts containing 2% lanthanum. This material also showed a very good activity for alcohol dehydration
publishDate 2002
dc.date.issued.fl_str_mv 2002-10-07
dc.date.accessioned.fl_str_mv 2021-02-10T18:45:36Z
dc.date.available.fl_str_mv 2021-02-10T18:45:36Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.citation.fl_str_mv MELO, Dulce Maria de Araújo; RUIZ, Juan Alberto Chavez; MELO, Marcus Antônio de Freitas; VITOR SOBRINHO, Eledir; MARTINELLI, Antonio Eduardo. Preparation and characterization of lanthanum palygorskite clays as acid catalysts. Journal Of Alloys And Compounds, [S.L.], v. 344, n. 1-2, p. 352-355, out. 2002. Elsevier. http://dx.doi.org/10.1016/s0925-8388(02)00384-5. Disponível em: https://www.sciencedirect.com/science/article/pii/S0925838802003845. Acesso em: 25 nov. 2020.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/31465
dc.identifier.issn.none.fl_str_mv 0925-8388
dc.identifier.doi.none.fl_str_mv 10.1016/S0925-8388(02)00384-5
identifier_str_mv MELO, Dulce Maria de Araújo; RUIZ, Juan Alberto Chavez; MELO, Marcus Antônio de Freitas; VITOR SOBRINHO, Eledir; MARTINELLI, Antonio Eduardo. Preparation and characterization of lanthanum palygorskite clays as acid catalysts. Journal Of Alloys And Compounds, [S.L.], v. 344, n. 1-2, p. 352-355, out. 2002. Elsevier. http://dx.doi.org/10.1016/s0925-8388(02)00384-5. Disponível em: https://www.sciencedirect.com/science/article/pii/S0925838802003845. Acesso em: 25 nov. 2020.
0925-8388
10.1016/S0925-8388(02)00384-5
url https://repositorio.ufrn.br/handle/123456789/31465
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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