Extended and local structural description of a kaolinitic clay, its fired ceramics and intermediates: an XRD and XANES analysis

Autores
Andrini, Leandro Rubén; Gauna, Matías Roberto; Conconi, María Susana; Suárez, Gustavo; Requejo, Félix Gregorio; Aglietti, Esteban Fausto; Rendtorff Birrer, Nicolás Maximiliano
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The thermal transformations processes of kaolinite (K) in kaolinitic clays is knownto consist of a dehydroxylation into metakaolin (MK) at ≈600 °C, followed by the formation of a spinel type aluminosilicate (SAS) at≈980 °C, and finally the development of mullite (M) at higher temperatures (1200–1300 °C). The structural characterization of thesematerials is generally based on X-ray diffraction (XRD) studies,where the XRD features of K and M are well defined due to their crystalline nature, but as consequence of the low crystallinity of MK and SAS, the precise characterization of these phases is not possible using this technique. In this study the nature of aluminum atoms in the different materials obtained by thermal treatments of a kaolinite is investigated using Al K-XANES and compared with other well-known aluminum containing materials. XRD and SEM characterization were also carried out. The results confirm the potentiality of this synchrotron based techniques for the characterization of natural materials and ceramics especially with low crystallinity. Particularly the mullite aluminums Al K-XANES spectra were not reported before.
Centro de Tecnología de Recursos Minerales y Cerámica
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Facultad de Ciencias Exactas
Materia
Química
Kaolinitic clay
Firing transformations
X-ray absorption
Al K-XANES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/119451

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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Extended and local structural description of a kaolinitic clay, its fired ceramics and intermediates: an XRD and XANES analysisAndrini, Leandro RubénGauna, Matías RobertoConconi, María SusanaSuárez, GustavoRequejo, Félix GregorioAglietti, Esteban FaustoRendtorff Birrer, Nicolás MaximilianoQuímicaKaolinitic clayFiring transformationsX-ray absorptionAl K-XANESThe thermal transformations processes of kaolinite (K) in kaolinitic clays is knownto consist of a dehydroxylation into metakaolin (MK) at ≈600 °C, followed by the formation of a spinel type aluminosilicate (SAS) at≈980 °C, and finally the development of mullite (M) at higher temperatures (1200–1300 °C). The structural characterization of thesematerials is generally based on X-ray diffraction (XRD) studies,where the XRD features of K and M are well defined due to their crystalline nature, but as consequence of the low crystallinity of MK and SAS, the precise characterization of these phases is not possible using this technique. In this study the nature of aluminum atoms in the different materials obtained by thermal treatments of a kaolinite is investigated using Al K-XANES and compared with other well-known aluminum containing materials. XRD and SEM characterization were also carried out. The results confirm the potentiality of this synchrotron based techniques for the characterization of natural materials and ceramics especially with low crystallinity. Particularly the mullite aluminums Al K-XANES spectra were not reported before.Centro de Tecnología de Recursos Minerales y CerámicaInstituto de Investigaciones Fisicoquímicas Teóricas y AplicadasFacultad de Ciencias Exactas2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf39-45http://sedici.unlp.edu.ar/handle/10915/119451enginfo:eu-repo/semantics/altIdentifier/issn/0169-1317info:eu-repo/semantics/altIdentifier/doi/10.1016/j.clay.2016.01.049info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:28:10Zoai:sedici.unlp.edu.ar:10915/119451Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:28:10.833SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Extended and local structural description of a kaolinitic clay, its fired ceramics and intermediates: an XRD and XANES analysis
title Extended and local structural description of a kaolinitic clay, its fired ceramics and intermediates: an XRD and XANES analysis
spellingShingle Extended and local structural description of a kaolinitic clay, its fired ceramics and intermediates: an XRD and XANES analysis
Andrini, Leandro Rubén
Química
Kaolinitic clay
Firing transformations
X-ray absorption
Al K-XANES
title_short Extended and local structural description of a kaolinitic clay, its fired ceramics and intermediates: an XRD and XANES analysis
title_full Extended and local structural description of a kaolinitic clay, its fired ceramics and intermediates: an XRD and XANES analysis
title_fullStr Extended and local structural description of a kaolinitic clay, its fired ceramics and intermediates: an XRD and XANES analysis
title_full_unstemmed Extended and local structural description of a kaolinitic clay, its fired ceramics and intermediates: an XRD and XANES analysis
title_sort Extended and local structural description of a kaolinitic clay, its fired ceramics and intermediates: an XRD and XANES analysis
dc.creator.none.fl_str_mv Andrini, Leandro Rubén
Gauna, Matías Roberto
Conconi, María Susana
Suárez, Gustavo
Requejo, Félix Gregorio
Aglietti, Esteban Fausto
Rendtorff Birrer, Nicolás Maximiliano
author Andrini, Leandro Rubén
author_facet Andrini, Leandro Rubén
Gauna, Matías Roberto
Conconi, María Susana
Suárez, Gustavo
Requejo, Félix Gregorio
Aglietti, Esteban Fausto
Rendtorff Birrer, Nicolás Maximiliano
author_role author
author2 Gauna, Matías Roberto
Conconi, María Susana
Suárez, Gustavo
Requejo, Félix Gregorio
Aglietti, Esteban Fausto
Rendtorff Birrer, Nicolás Maximiliano
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Química
Kaolinitic clay
Firing transformations
X-ray absorption
Al K-XANES
topic Química
Kaolinitic clay
Firing transformations
X-ray absorption
Al K-XANES
dc.description.none.fl_txt_mv The thermal transformations processes of kaolinite (K) in kaolinitic clays is knownto consist of a dehydroxylation into metakaolin (MK) at ≈600 °C, followed by the formation of a spinel type aluminosilicate (SAS) at≈980 °C, and finally the development of mullite (M) at higher temperatures (1200–1300 °C). The structural characterization of thesematerials is generally based on X-ray diffraction (XRD) studies,where the XRD features of K and M are well defined due to their crystalline nature, but as consequence of the low crystallinity of MK and SAS, the precise characterization of these phases is not possible using this technique. In this study the nature of aluminum atoms in the different materials obtained by thermal treatments of a kaolinite is investigated using Al K-XANES and compared with other well-known aluminum containing materials. XRD and SEM characterization were also carried out. The results confirm the potentiality of this synchrotron based techniques for the characterization of natural materials and ceramics especially with low crystallinity. Particularly the mullite aluminums Al K-XANES spectra were not reported before.
Centro de Tecnología de Recursos Minerales y Cerámica
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Facultad de Ciencias Exactas
description The thermal transformations processes of kaolinite (K) in kaolinitic clays is knownto consist of a dehydroxylation into metakaolin (MK) at ≈600 °C, followed by the formation of a spinel type aluminosilicate (SAS) at≈980 °C, and finally the development of mullite (M) at higher temperatures (1200–1300 °C). The structural characterization of thesematerials is generally based on X-ray diffraction (XRD) studies,where the XRD features of K and M are well defined due to their crystalline nature, but as consequence of the low crystallinity of MK and SAS, the precise characterization of these phases is not possible using this technique. In this study the nature of aluminum atoms in the different materials obtained by thermal treatments of a kaolinite is investigated using Al K-XANES and compared with other well-known aluminum containing materials. XRD and SEM characterization were also carried out. The results confirm the potentiality of this synchrotron based techniques for the characterization of natural materials and ceramics especially with low crystallinity. Particularly the mullite aluminums Al K-XANES spectra were not reported before.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/119451
url http://sedici.unlp.edu.ar/handle/10915/119451
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0169-1317
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.clay.2016.01.049
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
39-45
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instname:Universidad Nacional de La Plata
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