Silica-resin-bentonite nanocomposite and its application in catalysis

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 ma...

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Autores principales: Pérez, Federico Martín, Santori, Gerardo Fabián, Pompeo, Francisco, Nichio, Nora Nancy
Formato: Articulo
Lenguaje:Inglés
Publicado: 2022
Materias:
Química
Bentonite
Acidification
Nanocomposite
Catalysis
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/155454
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-155454
record_format dspace
spelling I19-R120-10915-1554542023-07-12T04:27:27Z http://sedici.unlp.edu.ar/handle/10915/155454 issn:2075-163X Silica-resin-bentonite nanocomposite and its application in catalysis Pérez, Federico Martín Santori, Gerardo Fabián Pompeo, Francisco Nichio, Nora Nancy 2022 2023-07-11T18:44:25Z en Química Bentonite Acidification Nanocomposite Catalysis 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 Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Bentonite
Acidification
Nanocomposite
Catalysis
spellingShingle Química
Bentonite
Acidification
Nanocomposite
Catalysis
Pérez, Federico Martín
Santori, Gerardo Fabián
Pompeo, Francisco
Nichio, Nora Nancy
Silica-resin-bentonite nanocomposite and its application in catalysis
topic_facet Química
Bentonite
Acidification
Nanocomposite
Catalysis
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.
format Articulo
Articulo
author Pérez, Federico Martín
Santori, Gerardo Fabián
Pompeo, Francisco
Nichio, Nora Nancy
author_facet Pérez, Federico Martín
Santori, Gerardo Fabián
Pompeo, Francisco
Nichio, Nora Nancy
author_sort Pérez, Federico Martín
title Silica-resin-bentonite nanocomposite and its application in 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
publishDate 2022
url http://sedici.unlp.edu.ar/handle/10915/155454
work_keys_str_mv AT perezfedericomartin silicaresinbentonitenanocompositeanditsapplicationincatalysis
AT santorigerardofabian silicaresinbentonitenanocompositeanditsapplicationincatalysis
AT pompeofrancisco silicaresinbentonitenanocompositeanditsapplicationincatalysis
AT nichionoranancy silicaresinbentonitenanocompositeanditsapplicationincatalysis
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