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

Kaolin-based magnetic zeolites A and P as water softeners

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dc.contributor.author	Bessa, Raquel de Andrade
dc.contributor.author	Costa, Luelc de Sousa
dc.contributor.author	Oliveira, Cristiane Pinto
dc.contributor.author	Bohn, Felipe
dc.contributor.author	Nascimento, Ronaldo Ferreira do
dc.contributor.author	Sasaki, José Marcos
dc.contributor.author	Loiola, Adonay Rodrigues
dc.date.accessioned	2020-06-18T12:44:58Z
dc.date.available	2020-06-18T12:44:58Z
dc.date.issued	2017-06
dc.description.resumo	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	pt_BR
dc.identifier.citation	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.	pt_BR
dc.identifier.doi	10.1016/j.micromeso.2017.03.004
dc.identifier.issn	1678-765X
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29295
dc.language	en	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Zeolite A	pt_BR
dc.subject	Zeolite P	pt_BR
dc.subject	Magnetic zeolites	pt_BR
dc.subject	Magnetite nanoparticles	pt_BR
dc.title	Kaolin-based magnetic zeolites A and P as water softeners	pt_BR
dc.type	article	pt_BR