Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000500240 |
Resumo: | The waste from the processing of kaolin in the Amazonian region of Brazil was subjected to a calcination process at 700°C for 2 h to obtain metakaolin, which, together with sodium hydroxide and sodium silicate, formed the reaction mixture. This mixture was subjected to an aging step (24 h at 60 rpm), and a subsequent hydrothermal process at 110°C for 10 h. By means of X-ray diffraction (XRD), differential thermal and thermogravimetric analysis (DTA/TG) and scanning electron microscopy (SEM) techniques, the crystallization of a single phase, faujasite (FAU) zeolite, was observed. In the postsynthesis process, it was verified by means of XRD that the thermal stability of this structure persists up to a temperature of 600°C. At 800°C, the structure of FAU collapses. Beginning at 850°C, new nepheline phases are formed, and at 1000°C, nepheline and mullite phases are formed. |
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Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the AmazonKaolin wastemetakaolinfaujasite zeolitethermal stabilityThe waste from the processing of kaolin in the Amazonian region of Brazil was subjected to a calcination process at 700°C for 2 h to obtain metakaolin, which, together with sodium hydroxide and sodium silicate, formed the reaction mixture. This mixture was subjected to an aging step (24 h at 60 rpm), and a subsequent hydrothermal process at 110°C for 10 h. By means of X-ray diffraction (XRD), differential thermal and thermogravimetric analysis (DTA/TG) and scanning electron microscopy (SEM) techniques, the crystallization of a single phase, faujasite (FAU) zeolite, was observed. In the postsynthesis process, it was verified by means of XRD that the thermal stability of this structure persists up to a temperature of 600°C. At 800°C, the structure of FAU collapses. Beginning at 850°C, new nepheline phases are formed, and at 1000°C, nepheline and mullite phases are formed.ABM, ABC, ABPol2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000500240Materials Research v.22 n.5 2019reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2019-0321info:eu-repo/semantics/openAccessCastro,Paulo Renan dos Santos deMaia,Ana Áurea BarretoAngélica,Rômulo Simõeseng2020-03-05T00:00:00Zoai:scielo:S1516-14392019000500240Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2020-03-05T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon |
title |
Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon |
spellingShingle |
Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon Castro,Paulo Renan dos Santos de Kaolin waste metakaolin faujasite zeolite thermal stability |
title_short |
Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon |
title_full |
Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon |
title_fullStr |
Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon |
title_full_unstemmed |
Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon |
title_sort |
Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon |
author |
Castro,Paulo Renan dos Santos de |
author_facet |
Castro,Paulo Renan dos Santos de Maia,Ana Áurea Barreto Angélica,Rômulo Simões |
author_role |
author |
author2 |
Maia,Ana Áurea Barreto Angélica,Rômulo Simões |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Castro,Paulo Renan dos Santos de Maia,Ana Áurea Barreto Angélica,Rômulo Simões |
dc.subject.por.fl_str_mv |
Kaolin waste metakaolin faujasite zeolite thermal stability |
topic |
Kaolin waste metakaolin faujasite zeolite thermal stability |
description |
The waste from the processing of kaolin in the Amazonian region of Brazil was subjected to a calcination process at 700°C for 2 h to obtain metakaolin, which, together with sodium hydroxide and sodium silicate, formed the reaction mixture. This mixture was subjected to an aging step (24 h at 60 rpm), and a subsequent hydrothermal process at 110°C for 10 h. By means of X-ray diffraction (XRD), differential thermal and thermogravimetric analysis (DTA/TG) and scanning electron microscopy (SEM) techniques, the crystallization of a single phase, faujasite (FAU) zeolite, was observed. In the postsynthesis process, it was verified by means of XRD that the thermal stability of this structure persists up to a temperature of 600°C. At 800°C, the structure of FAU collapses. Beginning at 850°C, new nepheline phases are formed, and at 1000°C, nepheline and mullite phases are formed. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000500240 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000500240 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-5373-mr-2019-0321 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.22 n.5 2019 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212675432218624 |