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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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/12/1486 |
| _version_ | 1797456184592039936 |
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| author | Federico M. Perez Gerardo F. Santori Francisco Pompeo Nora N. Nichio |
| author_facet | Federico M. Perez Gerardo F. Santori Francisco Pompeo Nora N. Nichio |
| author_sort | Federico M. Perez |
| collection | DOAJ |
| 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 HNO<sub>3</sub>. 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 °C, with a HNO<sub>3</sub> concentration of 0.5 mol L<sup>−1</sup>, which was attributed to both its acid site density—3.9 mmol per gram of bentonite—and the acidic strength of these sites. |
| first_indexed | 2024-03-09T16:04:42Z |
| format | Article |
| id | doaj.art-ed35fe023b254cd8b533d9fb2237eef3 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T16:04:42Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-ed35fe023b254cd8b533d9fb2237eef32023-11-24T16:50:36ZengMDPI AGMinerals2075-163X2022-11-011212148610.3390/min12121486Silica-Resin-Bentonite Nanocomposite and Its Application in CatalysisFederico M. Perez0Gerardo F. Santori1Francisco Pompeo2Nora N. Nichio3Centro de Investigación y Desarrollo en Ciencias Aplicadas (CINDECA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP)—CONICET, Calle 47, 257, La Plata 1900, ArgentinaCentro de Investigación y Desarrollo en Ciencias Aplicadas (CINDECA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP)—CONICET, Calle 47, 257, La Plata 1900, ArgentinaCentro de Investigación y Desarrollo en Ciencias Aplicadas (CINDECA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP)—CONICET, Calle 47, 257, La Plata 1900, ArgentinaCentro de Investigación y Desarrollo en Ciencias Aplicadas (CINDECA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP)—CONICET, Calle 47, 257, La Plata 1900, ArgentinaBentonites 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 HNO<sub>3</sub>. 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 °C, with a HNO<sub>3</sub> concentration of 0.5 mol L<sup>−1</sup>, which was attributed to both its acid site density—3.9 mmol per gram of bentonite—and the acidic strength of these sites.https://www.mdpi.com/2075-163X/12/12/1486bentoniteacidificationnanocompositecatalysis |
| spellingShingle | Federico M. Perez Gerardo F. Santori Francisco Pompeo Nora N. Nichio Silica-Resin-Bentonite Nanocomposite and Its Application in Catalysis Minerals bentonite acidification nanocomposite catalysis |
| title | 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_short | Silica-Resin-Bentonite Nanocomposite and Its Application in Catalysis |
| title_sort | silica resin bentonite nanocomposite and its application in catalysis |
| topic | bentonite acidification nanocomposite catalysis |
| url | https://www.mdpi.com/2075-163X/12/12/1486 |
| work_keys_str_mv | AT federicomperez silicaresinbentonitenanocompositeanditsapplicationincatalysis AT gerardofsantori silicaresinbentonitenanocompositeanditsapplicationincatalysis AT franciscopompeo silicaresinbentonitenanocompositeanditsapplicationincatalysis AT norannichio silicaresinbentonitenanocompositeanditsapplicationincatalysis |