Kaolin-based magnetic zeolites A and P as water softeners

In this work, we report an experimental investigation on the synthesis of zeolites A and P, using kaolin as the main SiO2 and Al2O3 sources, by hydrothermal route, as well as on the structural, spectroscopic and magnetic properties of the produced zeolite composites with magnetite nanoparticles. The...

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Principais autores: Bessa, Raquel de Andrade, Costa, Luelc de Sousa, Oliveira, Cristiane Pinto, Bohn, Felipe, Nascimento, Ronaldo Ferreira do, Sasaki, José Marcos, Loiola, Adonay Rodrigues
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Idioma:English
Publicado em: Elsevier
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spelling ri-123456789-292952020-06-21T07:45:24Z Kaolin-based magnetic zeolites A and P as water softeners Bessa, Raquel de Andrade Costa, Luelc de Sousa Oliveira, Cristiane Pinto Bohn, Felipe Nascimento, Ronaldo Ferreira do Sasaki, José Marcos Loiola, Adonay Rodrigues Zeolite A Zeolite P Magnetic zeolites Magnetite nanoparticles In this work, we report an experimental investigation on the synthesis of zeolites A and P, using kaolin as the main SiO2 and Al2O3 sources, by hydrothermal route, as well as on the structural, spectroscopic and magnetic properties of the produced zeolite composites with magnetite nanoparticles. The zeolites were successfully synthesized and the characterization of the obtained materials was carried out considering different techniques, including X-ray diffraction (XRD), infrared vibrational spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), as well as measurements of the magnetization as a function of the temperature and applied magnetic field. XRD analysis confirmed zeolites A and P as main crystalline phases, with a low intensity peak regarding the presence of small quantities of quartz remaining from the unreacted clay. SEM showed the well-defined morphologies of zeolites and, in the composites, magnetite nanoparticles dispersed over their surface. The average size of the magnetite nanoparticles was ca. 50 nm as determined by TEM analyses. The magnetic characterization confirmed the ferrimagnetic behavior of the magnetite nanoparticles and of the composites, as well as verified that the magnetic properties of the nanoparticles are not affected by the zeolites in the composite formation. Thus, the results evidenced that high quality zeolite composites with magnetite nanoparticles can be reached by considering the employed low cost method, placing this route as an attractive alternative for water softening reaching removal levels of about 97% in the first application times 2020-06-18T12:44:58Z 2020-06-18T12:44:58Z 2017-06 article BESSA, Raquel de Andrade; COSTA, Luelc de Sousa; OLIVEIRA, Cristiane Pinto; BOHN, Felipe; NASCIMENTO, Ronaldo Ferreira do; SASAKI, José Marcos; LOIOLA, Adonay Rodrigues. Kaolin-based magnetic zeolites A and P as water softeners. Microporous And Mesoporous Materials, [s.l.], v. 245, p. 64-72, jun. 2017. Elsevier. Disponível em: https://www.sciencedirect.com/science/article/pii/S1387181117301610?via%3Dihub. Acesso em: 10 jun. 2020. http://dx.doi.org/10.1016/j.micromeso.2017.03.004. 1678-765X https://repositorio.ufrn.br/jspui/handle/123456789/29295 10.1016/j.micromeso.2017.03.004 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Elsevier
institution Repositório Institucional
collection RI - UFRN
language English
topic Zeolite A
Zeolite P
Magnetic zeolites
Magnetite nanoparticles
spellingShingle Zeolite A
Zeolite P
Magnetic zeolites
Magnetite nanoparticles
Bessa, Raquel de Andrade
Costa, Luelc de Sousa
Oliveira, Cristiane Pinto
Bohn, Felipe
Nascimento, Ronaldo Ferreira do
Sasaki, José Marcos
Loiola, Adonay Rodrigues
Kaolin-based magnetic zeolites A and P as water softeners
description In this work, we report an experimental investigation on the synthesis of zeolites A and P, using kaolin as the main SiO2 and Al2O3 sources, by hydrothermal route, as well as on the structural, spectroscopic and magnetic properties of the produced zeolite composites with magnetite nanoparticles. The zeolites were successfully synthesized and the characterization of the obtained materials was carried out considering different techniques, including X-ray diffraction (XRD), infrared vibrational spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), as well as measurements of the magnetization as a function of the temperature and applied magnetic field. XRD analysis confirmed zeolites A and P as main crystalline phases, with a low intensity peak regarding the presence of small quantities of quartz remaining from the unreacted clay. SEM showed the well-defined morphologies of zeolites and, in the composites, magnetite nanoparticles dispersed over their surface. The average size of the magnetite nanoparticles was ca. 50 nm as determined by TEM analyses. The magnetic characterization confirmed the ferrimagnetic behavior of the magnetite nanoparticles and of the composites, as well as verified that the magnetic properties of the nanoparticles are not affected by the zeolites in the composite formation. Thus, the results evidenced that high quality zeolite composites with magnetite nanoparticles can be reached by considering the employed low cost method, placing this route as an attractive alternative for water softening reaching removal levels of about 97% in the first application times
format article
author Bessa, Raquel de Andrade
Costa, Luelc de Sousa
Oliveira, Cristiane Pinto
Bohn, Felipe
Nascimento, Ronaldo Ferreira do
Sasaki, José Marcos
Loiola, Adonay Rodrigues
author_facet Bessa, Raquel de Andrade
Costa, Luelc de Sousa
Oliveira, Cristiane Pinto
Bohn, Felipe
Nascimento, Ronaldo Ferreira do
Sasaki, José Marcos
Loiola, Adonay Rodrigues
author_sort Bessa, Raquel de Andrade
title Kaolin-based magnetic zeolites A and P as water softeners
title_short Kaolin-based magnetic zeolites A and P as water softeners
title_full Kaolin-based magnetic zeolites A and P as water softeners
title_fullStr Kaolin-based magnetic zeolites A and P as water softeners
title_full_unstemmed Kaolin-based magnetic zeolites A and P as water softeners
title_sort kaolin-based magnetic zeolites a and p as water softeners
publisher Elsevier
publishDate 2020
url https://repositorio.ufrn.br/jspui/handle/123456789/29295
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AT costaluelcdesousa kaolinbasedmagneticzeolitesaandpaswatersofteners
AT oliveiracristianepinto kaolinbasedmagneticzeolitesaandpaswatersofteners
AT bohnfelipe kaolinbasedmagneticzeolitesaandpaswatersofteners
AT nascimentoronaldoferreirado kaolinbasedmagneticzeolitesaandpaswatersofteners
AT sasakijosemarcos kaolinbasedmagneticzeolitesaandpaswatersofteners
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