Silica-resin-bentonite nanocomposite and its application in catalysis

Autores
Pérez, Federico Martín; Santori, Gerardo Fabián; Pompeo, Francisco; Nichio, Nora Nancy
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Bentonites are natural clays found in abundance in deposits all over the planet and possess certain properties that make them interesting for various industrial applications. Through their activation or acid treatment, they can be used as catalysts in several reactions of interest. However, these materials form colloidal suspensions in water or in aqueous solutions, which makes their separation and recovery difficult and prevents their implementation on an industrial scale. To overcome these limitations, in the present work, a silica-resin-bentonite composite material was synthesized and activated with HNO₃. The activated solids were characterized and evaluated in the catalytic reaction of solketal synthesis from glycerol and acetone. The best results were obtained for a composite containing 47 wt.% acidified bentonite at 90 ºC, with a HNO₃ concentration of 0.5 mol L⁻1, which was attributed to both its acid site density—3.9 mmol per gram of bentonite—and the acidic strength of these sites.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Facultad de Ingeniería
Materia
Química
Bentonite
Acidification
Nanocomposite
Catalysis
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/155454
Acceder
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Silica-resin-bentonite nanocomposite and its application in catalysisPérez, Federico MartínSantori, Gerardo FabiánPompeo, FranciscoNichio, Nora NancyQuímicaBentoniteAcidificationNanocompositeCatalysisBentonites are natural clays found in abundance in deposits all over the planet and possess certain properties that make them interesting for various industrial applications. Through their activation or acid treatment, they can be used as catalysts in several reactions of interest. However, these materials form colloidal suspensions in water or in aqueous solutions, which makes their separation and recovery difficult and prevents their implementation on an industrial scale. To overcome these limitations, in the present work, a silica-resin-bentonite composite material was synthesized and activated with HNO₃. The activated solids were characterized and evaluated in the catalytic reaction of solketal synthesis from glycerol and acetone. The best results were obtained for a composite containing 47 wt.% acidified bentonite at 90 ºC, with a HNO₃ concentration of 0.5 mol L⁻1, which was attributed to both its acid site density—3.9 mmol per gram of bentonite—and the acidic strength of these sites.Centro de Investigación y Desarrollo en Ciencias AplicadasFacultad de Ingeniería2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/155454enginfo:eu-repo/semantics/altIdentifier/issn/2075-163Xinfo:eu-repo/semantics/altIdentifier/doi/10.3390/min12121486info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:40:21Zoai:sedici.unlp.edu.ar:10915/155454Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:40:21.568SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Silica-resin-bentonite nanocomposite and its application in catalysis
title Silica-resin-bentonite nanocomposite and its application in catalysis
spellingShingle Silica-resin-bentonite nanocomposite and its application in catalysis
Pérez, Federico Martín
Química
Bentonite
Acidification
Nanocomposite
Catalysis
title_short Silica-resin-bentonite nanocomposite and its application in catalysis
title_full Silica-resin-bentonite nanocomposite and its application in catalysis
title_fullStr Silica-resin-bentonite nanocomposite and its application in catalysis
title_full_unstemmed Silica-resin-bentonite nanocomposite and its application in catalysis
title_sort Silica-resin-bentonite nanocomposite and its application in catalysis
dc.creator.none.fl_str_mv Pérez, Federico Martín
Santori, Gerardo Fabián
Pompeo, Francisco
Nichio, Nora Nancy
author Pérez, Federico Martín
author_facet Pérez, Federico Martín
Santori, Gerardo Fabián
Pompeo, Francisco
Nichio, Nora Nancy
author_role author
author2 Santori, Gerardo Fabián
Pompeo, Francisco
Nichio, Nora Nancy
author2_role author
author
author
dc.subject.none.fl_str_mv Química
Bentonite
Acidification
Nanocomposite
Catalysis
topic Química
Bentonite
Acidification
Nanocomposite
Catalysis
dc.description.none.fl_txt_mv Bentonites are natural clays found in abundance in deposits all over the planet and possess certain properties that make them interesting for various industrial applications. Through their activation or acid treatment, they can be used as catalysts in several reactions of interest. However, these materials form colloidal suspensions in water or in aqueous solutions, which makes their separation and recovery difficult and prevents their implementation on an industrial scale. To overcome these limitations, in the present work, a silica-resin-bentonite composite material was synthesized and activated with HNO₃. The activated solids were characterized and evaluated in the catalytic reaction of solketal synthesis from glycerol and acetone. The best results were obtained for a composite containing 47 wt.% acidified bentonite at 90 ºC, with a HNO₃ concentration of 0.5 mol L⁻1, which was attributed to both its acid site density—3.9 mmol per gram of bentonite—and the acidic strength of these sites.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Facultad de Ingeniería
description Bentonites are natural clays found in abundance in deposits all over the planet and possess certain properties that make them interesting for various industrial applications. Through their activation or acid treatment, they can be used as catalysts in several reactions of interest. However, these materials form colloidal suspensions in water or in aqueous solutions, which makes their separation and recovery difficult and prevents their implementation on an industrial scale. To overcome these limitations, in the present work, a silica-resin-bentonite composite material was synthesized and activated with HNO₃. The activated solids were characterized and evaluated in the catalytic reaction of solketal synthesis from glycerol and acetone. The best results were obtained for a composite containing 47 wt.% acidified bentonite at 90 ºC, with a HNO₃ concentration of 0.5 mol L⁻1, which was attributed to both its acid site density—3.9 mmol per gram of bentonite—and the acidic strength of these sites.
publishDate 2022
dc.date.none.fl_str_mv 2022
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
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/155454
url http://sedici.unlp.edu.ar/handle/10915/155454
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2075-163X
info:eu-repo/semantics/altIdentifier/doi/10.3390/min12121486
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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