Exploring microstructure of MgCl2·nEtOH adducts for Ziegler-Natta catalysts

The activation of MgCl2 through the formation of MgCl2·nEtOH adducts is considered the principal step for the preparation of high performance Ziegler-Natta catalysts for olefins polymerizations in industry. Despite this importance, due to the complicated microstructure of the adducts, the precise st...

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Autores: Bazvand, Reza, Bahri-Laleh, Naeimeh, Abedini, Hossein, Nekoomanesh-Haghighi, Mehdi, Poater Teixidor, Albert
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/24646
Acceso en línea:http://hdl.handle.net/10256/24646
Access Level:acceso abierto
Palabra clave:Catalitzadors
Catalysts
Poliolefines
Polyolefins
Polimerització
Polymerization
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spelling Exploring microstructure of MgCl2·nEtOH adducts for Ziegler-Natta catalystsBazvand, RezaBahri-Laleh, NaeimehAbedini, HosseinNekoomanesh-Haghighi, MehdiPoater Teixidor, AlbertCatalitzadorsCatalystsPoliolefinesPolyolefinsPolimeritzacióPolymerizationThe activation of MgCl2 through the formation of MgCl2·nEtOH adducts is considered the principal step for the preparation of high performance Ziegler-Natta catalysts for olefins polymerizations in industry. Despite this importance, due to the complicated microstructure of the adducts, the precise structural characterization of these compounds has been left behind. In this research, four MgCl2.nEtOH adducts (with n = 0.6, 1.0, 1.8, and 3.2) were prepared by melt quenching procedure and assessed thoroughly by different techniques. Despite the multiple peaks in TGA analysis, similar FTIR spectra were recorded, and the adducts with n = 3.2 revealed sticky nature in SEM pictures which enhanced their particle size and broadened SPAN. According to the XRD spectra, the adducts showed distinct peaks related to the lateral cuts of distorted MgCl2, in which the ratio of α-MgCl2 to β-MgCl2 form enhanced by increasing the EtOH content, that was further confirmed by DFT calculations, even though it must be accepted that it is only a minimalist exercise in terms of a clear characterization of the adductsMinisterio de Ciencia e Innovación for project PID2021–127423NB-I00, and the Generalitat de Catalunya for project 2021SGR623. Open Access funding provided thanks to the CRUE-CSIC agreement with ElsevierElsevierAgencia Estatal de Investigación2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpeer-reviewedapplication/pdfhttp://hdl.handle.net/10256/24646http://hdl.handle.net/10256/24646Journal of Molecular Structure, 2023, vol. 1291, art. núm. 136098Articles publicats (D-Q)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.molstruc.2023.136098info:eu-repo/semantics/altIdentifier/issn/0022-2860info:eu-repo/semantics/altIdentifier/eissn/1872-8014PID2021-127423NB-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-127423NB-I00Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:10256/246462026-05-29T05:05:01Z
dc.title.none.fl_str_mv Exploring microstructure of MgCl2·nEtOH adducts for Ziegler-Natta catalysts
title Exploring microstructure of MgCl2·nEtOH adducts for Ziegler-Natta catalysts
spellingShingle Exploring microstructure of MgCl2·nEtOH adducts for Ziegler-Natta catalysts
Bazvand, Reza
Catalitzadors
Catalysts
Poliolefines
Polyolefins
Polimerització
Polymerization
title_short Exploring microstructure of MgCl2·nEtOH adducts for Ziegler-Natta catalysts
title_full Exploring microstructure of MgCl2·nEtOH adducts for Ziegler-Natta catalysts
title_fullStr Exploring microstructure of MgCl2·nEtOH adducts for Ziegler-Natta catalysts
title_full_unstemmed Exploring microstructure of MgCl2·nEtOH adducts for Ziegler-Natta catalysts
title_sort Exploring microstructure of MgCl2·nEtOH adducts for Ziegler-Natta catalysts
dc.creator.none.fl_str_mv Bazvand, Reza
Bahri-Laleh, Naeimeh
Abedini, Hossein
Nekoomanesh-Haghighi, Mehdi
Poater Teixidor, Albert
author Bazvand, Reza
author_facet Bazvand, Reza
Bahri-Laleh, Naeimeh
Abedini, Hossein
Nekoomanesh-Haghighi, Mehdi
Poater Teixidor, Albert
author_role author
author2 Bahri-Laleh, Naeimeh
Abedini, Hossein
Nekoomanesh-Haghighi, Mehdi
Poater Teixidor, Albert
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Agencia Estatal de Investigación
dc.subject.none.fl_str_mv Catalitzadors
Catalysts
Poliolefines
Polyolefins
Polimerització
Polymerization
topic Catalitzadors
Catalysts
Poliolefines
Polyolefins
Polimerització
Polymerization
description The activation of MgCl2 through the formation of MgCl2·nEtOH adducts is considered the principal step for the preparation of high performance Ziegler-Natta catalysts for olefins polymerizations in industry. Despite this importance, due to the complicated microstructure of the adducts, the precise structural characterization of these compounds has been left behind. In this research, four MgCl2.nEtOH adducts (with n = 0.6, 1.0, 1.8, and 3.2) were prepared by melt quenching procedure and assessed thoroughly by different techniques. Despite the multiple peaks in TGA analysis, similar FTIR spectra were recorded, and the adducts with n = 3.2 revealed sticky nature in SEM pictures which enhanced their particle size and broadened SPAN. According to the XRD spectra, the adducts showed distinct peaks related to the lateral cuts of distorted MgCl2, in which the ratio of α-MgCl2 to β-MgCl2 form enhanced by increasing the EtOH content, that was further confirmed by DFT calculations, even though it must be accepted that it is only a minimalist exercise in terms of a clear characterization of the adducts
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
peer-reviewed
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/24646
http://hdl.handle.net/10256/24646
url http://hdl.handle.net/10256/24646
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.molstruc.2023.136098
info:eu-repo/semantics/altIdentifier/issn/0022-2860
info:eu-repo/semantics/altIdentifier/eissn/1872-8014
PID2021-127423NB-I00
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-127423NB-I00
dc.rights.none.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Journal of Molecular Structure, 2023, vol. 1291, art. núm. 136098
Articles publicats (D-Q)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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