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Zeolites synthesis from phyllosilicates and their performance for CO2 adsorption.

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Title: Zeolites synthesis from phyllosilicates and their performance for CO2 adsorption.
Authors: Essih, Salima1 (AUTHOR), Vilarrasa-García, Enrique2 (AUTHOR), Azevedo, Diana Cristina Silva2 (AUTHOR), Ballesteros-Plata, Daniel1 (AUTHOR), Barroso-Martín, Isabel1 (AUTHOR), Infantes-Molina, Antonia1 (AUTHOR), Rodríguez-Castellón, Enrique1 (AUTHOR), Franco, Francisco1 (AUTHOR), Cecilia, Juan Antonio1 (AUTHOR) jacecilia@uma.es
Source: Environmental Science & Pollution Research. May2024, Vol. 31 Issue 25, p37298-37315. 18p.
Subject Terms: *Phyllosilicates, *Zeolites, *Saponite, *Meerschaum, *Aluminum silicates, *Kaolinite
Abstract: Five phyllosilicates (kaolinite, montmorillonite, saponite, sepiolite and palygorskite) have been selected as starting materials for the synthesis of zeolites. Among them, kaolinite and montmorillonite display the lowest Si/Al molar ratio leading to aluminosilicates with high crystallinity. Thus, the hydrothermal treatment under basic conditions forms 4A zeolite when kaolinite is used as starting material while 13X zeolite is obtained when montmorillonite is used as starting material. The microporosity and CO2-adsorption capacity of the prepared zeolites are directly related to its crystallinity. Thus, in order to improve it, raw phyllosilicates were subjected to a microwave-assisted treatment to remove undesired Mg or Fe-species, which have a negative effect in the assembling of the zeolites by hydrothermal basic conditions in a second step. The highest adsorption value was 3.85 mmol/g at 25 °C and 760 mm of Hg for Mont-A-B sample after the consecutive treatments. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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An: 178046418
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  Label: Title
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  Data: Zeolites synthesis from phyllosilicates and their performance for CO<subscript>2</subscript> adsorption.
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  Data: <searchLink fieldCode="AR" term="%22Essih%2C+Salima%22">Essih, Salima</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vilarrasa-García%2C+Enrique%22">Vilarrasa-García, Enrique</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Azevedo%2C+Diana+Cristina+Silva%22">Azevedo, Diana Cristina Silva</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ballesteros-Plata%2C+Daniel%22">Ballesteros-Plata, Daniel</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Barroso-Martín%2C+Isabel%22">Barroso-Martín, Isabel</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Infantes-Molina%2C+Antonia%22">Infantes-Molina, Antonia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rodríguez-Castellón%2C+Enrique%22">Rodríguez-Castellón, Enrique</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Franco%2C+Francisco%22">Franco, Francisco</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cecilia%2C+Juan+Antonio%22">Cecilia, Juan Antonio</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jacecilia@uma.es</i>
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  Data: <searchLink fieldCode="JN" term="%22Environmental+Science+%26+Pollution+Research%22">Environmental Science & Pollution Research</searchLink>. May2024, Vol. 31 Issue 25, p37298-37315. 18p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Phyllosilicates%22">Phyllosilicates</searchLink><br />*<searchLink fieldCode="DE" term="%22Zeolites%22">Zeolites</searchLink><br />*<searchLink fieldCode="DE" term="%22Saponite%22">Saponite</searchLink><br />*<searchLink fieldCode="DE" term="%22Meerschaum%22">Meerschaum</searchLink><br />*<searchLink fieldCode="DE" term="%22Aluminum+silicates%22">Aluminum silicates</searchLink><br />*<searchLink fieldCode="DE" term="%22Kaolinite%22">Kaolinite</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Five phyllosilicates (kaolinite, montmorillonite, saponite, sepiolite and palygorskite) have been selected as starting materials for the synthesis of zeolites. Among them, kaolinite and montmorillonite display the lowest Si/Al molar ratio leading to aluminosilicates with high crystallinity. Thus, the hydrothermal treatment under basic conditions forms 4A zeolite when kaolinite is used as starting material while 13X zeolite is obtained when montmorillonite is used as starting material. The microporosity and CO2-adsorption capacity of the prepared zeolites are directly related to its crystallinity. Thus, in order to improve it, raw phyllosilicates were subjected to a microwave-assisted treatment to remove undesired Mg or Fe-species, which have a negative effect in the assembling of the zeolites by hydrothermal basic conditions in a second step. The highest adsorption value was 3.85 mmol/g at 25 °C and 760 mm of Hg for Mont-A-B sample after the consecutive treatments. [ABSTRACT FROM AUTHOR]
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      – Type: doi
        Value: 10.1007/s11356-024-33685-0
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      – Code: eng
        Text: English
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        PageCount: 18
        StartPage: 37298
    Subjects:
      – SubjectFull: Phyllosilicates
        Type: general
      – SubjectFull: Zeolites
        Type: general
      – SubjectFull: Saponite
        Type: general
      – SubjectFull: Meerschaum
        Type: general
      – SubjectFull: Aluminum silicates
        Type: general
      – SubjectFull: Kaolinite
        Type: general
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      – TitleFull: Zeolites synthesis from phyllosilicates and their performance for CO2 adsorption.
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            – D: 21
              M: 05
              Text: May2024
              Type: published
              Y: 2024
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