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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/119451
Ver los metadatos del registro completo
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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 http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
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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) |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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