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
Formato:	article
Idioma:	English
Publicado em:	Elsevier
Assuntos:	Zeolite A Zeolite P Magnetic zeolites Magnetite nanoparticles
Endereço do item:	https://repositorio.ufrn.br/jspui/handle/123456789/29295
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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
work_keys_str_mv	AT bessaraqueldeandrade kaolinbasedmagneticzeolitesaandpaswatersofteners AT costaluelcdesousa kaolinbasedmagneticzeolitesaandpaswatersofteners AT oliveiracristianepinto kaolinbasedmagneticzeolitesaandpaswatersofteners AT bohnfelipe kaolinbasedmagneticzeolitesaandpaswatersofteners AT nascimentoronaldoferreirado kaolinbasedmagneticzeolitesaandpaswatersofteners AT sasakijosemarcos kaolinbasedmagneticzeolitesaandpaswatersofteners AT loiolaadonayrodrigues kaolinbasedmagneticzeolitesaandpaswatersofteners
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Kaolin-based magnetic zeolites A and P as water softeners

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