Kaolinite structural modifications induced by mechanical activation

This study presents novel characterisation techniques to evaluate the effects of mechanical activation (MA) on the kaolinite structure. MA was achieved with a planetary ball mill at various times and rotation speeds to get different activation degrees. A thermal activation was performed for comparis...

Descripción completa

Detalles Bibliográficos
Autores: Mañosa Bover, Jofre, Calvo de la Rosa, Jaume, Silvello, A. (Alessio), Maldonado Alameda, Alex, Chimenos Ribera, Josep Ma.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/198963
Acceso en línea:https://hdl.handle.net/2445/198963
Access Level:acceso abierto
Palabra clave:Caolí
Difracció de raigs X
Espectroscòpia infraroja
Kaolin
X-rays diffraction
Infrared spectroscopy
id ES_df709c655ee108ee8a36f4b918ec8ed4
oai_identifier_str oai:diposit.ub.edu:2445/198963
network_acronym_str ES
network_name_str España
repository_id_str
spelling Kaolinite structural modifications induced by mechanical activationMañosa Bover, JofreCalvo de la Rosa, JaumeSilvello, A. (Alessio)Maldonado Alameda, AlexChimenos Ribera, Josep Ma.CaolíDifracció de raigs XEspectroscòpia infrarojaKaolinX-rays diffractionInfrared spectroscopyThis study presents novel characterisation techniques to evaluate the effects of mechanical activation (MA) on the kaolinite structure. MA was achieved with a planetary ball mill at various times and rotation speeds to get different activation degrees. A thermal activation was performed for comparison purposes. The results of X-ray diffraction and selective area electron diffraction demonstrated that the kaolinite content was significantly reduced as the amorphous phase increased. Illite, K-feldspars, and quartz impurities were extensively modified as well. The morphology of kaolinite particles is altered. Furthermore, the mechanical treatments significantly affected the hydroxyls, losing bonding strength with the structure, as stated with 1H nuclear magnetic resonance. Thermogravimetric analysis and infrared spectroscopy also revealed that water molecules could be formed due to the reaction of hydroxyls between them or with the atmosphere. This work improves the comprehension of MA on kaolin by clearly confirming with new techniques that the mechanical treatments distort the kaolinite structure.Elsevier B.V.2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/198963Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1016/j.clay.2023.106918Applied Clay Science, 2023, vol. 238, p. 1-11https://doi.org/10.1016/j.clay.2023.106918cc-by-nc-nd (c) Mañosa Bover, Jofre et al., 2023https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1989632026-05-27T06:46:51Z
dc.title.none.fl_str_mv Kaolinite structural modifications induced by mechanical activation
title Kaolinite structural modifications induced by mechanical activation
spellingShingle Kaolinite structural modifications induced by mechanical activation
Mañosa Bover, Jofre
Caolí
Difracció de raigs X
Espectroscòpia infraroja
Kaolin
X-rays diffraction
Infrared spectroscopy
title_short Kaolinite structural modifications induced by mechanical activation
title_full Kaolinite structural modifications induced by mechanical activation
title_fullStr Kaolinite structural modifications induced by mechanical activation
title_full_unstemmed Kaolinite structural modifications induced by mechanical activation
title_sort Kaolinite structural modifications induced by mechanical activation
dc.creator.none.fl_str_mv Mañosa Bover, Jofre
Calvo de la Rosa, Jaume
Silvello, A. (Alessio)
Maldonado Alameda, Alex
Chimenos Ribera, Josep Ma.
author Mañosa Bover, Jofre
author_facet Mañosa Bover, Jofre
Calvo de la Rosa, Jaume
Silvello, A. (Alessio)
Maldonado Alameda, Alex
Chimenos Ribera, Josep Ma.
author_role author
author2 Calvo de la Rosa, Jaume
Silvello, A. (Alessio)
Maldonado Alameda, Alex
Chimenos Ribera, Josep Ma.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Caolí
Difracció de raigs X
Espectroscòpia infraroja
Kaolin
X-rays diffraction
Infrared spectroscopy
topic Caolí
Difracció de raigs X
Espectroscòpia infraroja
Kaolin
X-rays diffraction
Infrared spectroscopy
description This study presents novel characterisation techniques to evaluate the effects of mechanical activation (MA) on the kaolinite structure. MA was achieved with a planetary ball mill at various times and rotation speeds to get different activation degrees. A thermal activation was performed for comparison purposes. The results of X-ray diffraction and selective area electron diffraction demonstrated that the kaolinite content was significantly reduced as the amorphous phase increased. Illite, K-feldspars, and quartz impurities were extensively modified as well. The morphology of kaolinite particles is altered. Furthermore, the mechanical treatments significantly affected the hydroxyls, losing bonding strength with the structure, as stated with 1H nuclear magnetic resonance. Thermogravimetric analysis and infrared spectroscopy also revealed that water molecules could be formed due to the reaction of hydroxyls between them or with the atmosphere. This work improves the comprehension of MA on kaolin by clearly confirming with new techniques that the mechanical treatments distort the kaolinite structure.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/198963
url https://hdl.handle.net/2445/198963
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1016/j.clay.2023.106918
Applied Clay Science, 2023, vol. 238, p. 1-11
https://doi.org/10.1016/j.clay.2023.106918
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Mañosa Bover, Jofre et al., 2023
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Mañosa Bover, Jofre et al., 2023
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869422064437297152
score 15,300724

Similares en LA Referencia