Synthesis of the MCM-22 zeolite precursor and thermal, deslamination and acidification modifications

Detalhes bibliográficos
Autor(a) principal: Lima, Wellington Siqueira
Data de Publicação: 2021
Outros Autores: Silva, Francisco Alex de Sousa, Quintela, Paulo Henrique Leite, Rodrigues, Meiry Gláucia Freire
Tipo de documento: Artigo
Idioma: por
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/22539
Resumo: In this work, the precursor (P)MCM-22 was prepared using the hydrothermal method in a static system and thermal modifications, delamination and acidification were carried out. This study aims to optimize the modification that promotes the disorganization of the zeolitic precursor lamellae and makes the active sites more accessible. The precursor (P)MCM-22 was prepared under hydrothermal conditions with a temperature of 150 oC and a crystallization time of 7 days. The delamination process was carried out via swelling of the lamellar precursor with CTABr and subsequent exfoliation by sonication. Characterization techniques such as X-ray diffraction, Chemical analysis by Energy Dispersive X-Ray Spectroscopy and Physical Nitrogen Adsorption were used. It was observed by the XRD analysis of the products of the syntheses carried out, that the presence of the CTABr surfactant promotes the disorganization of the lamellae. It is also concluded that there was an influence of acidification on the properties of the final products.
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spelling Synthesis of the MCM-22 zeolite precursor and thermal, deslamination and acidification modificationsSíntesis del precursor de zeolita MCM-22 y modificacións termal, deslamination y acidificationSíntese do percursor (P)MCM-22 e modificações térmica, deslaminação e acidificaçãoSíntesisPrecursor (P)MCM-22MCM-22CalcinaciónDelaminaciónAcidification.SynthesisPrecursor (P)MCM-22MCM-22CalcinationDeslaminaçãoAcidificação.SíntesePrecursor (P)MCM-22CalcinaçãoDeslaminaçãoAcidification.In this work, the precursor (P)MCM-22 was prepared using the hydrothermal method in a static system and thermal modifications, delamination and acidification were carried out. This study aims to optimize the modification that promotes the disorganization of the zeolitic precursor lamellae and makes the active sites more accessible. The precursor (P)MCM-22 was prepared under hydrothermal conditions with a temperature of 150 oC and a crystallization time of 7 days. The delamination process was carried out via swelling of the lamellar precursor with CTABr and subsequent exfoliation by sonication. Characterization techniques such as X-ray diffraction, Chemical analysis by Energy Dispersive X-Ray Spectroscopy and Physical Nitrogen Adsorption were used. It was observed by the XRD analysis of the products of the syntheses carried out, that the presence of the CTABr surfactant promotes the disorganization of the lamellae. It is also concluded that there was an influence of acidification on the properties of the final products.En este trabajo se preparó el precursor (P) MCM-22 mediante el método hidrotermal en un sistema estático y se realizaron modificaciones térmicas, deslaminación y acidificación. Este estudio tiene como objetivo optimizar la modificación que promueve la desorganización de las laminillas precursoras zeolíticas y hace más accesibles los sitios activos. El precursor (P) MCM-22 se preparó en condiciones hidrotermales con una temperatura de 150 ° C y un tiempo de cristalización de 7 días. El proceso de deslaminación se llevó a cabo mediante hinchamiento del precursor laminar con CTABr y posterior exfoliación por sonicación. Se utilizaron técnicas de caracterización como la difractometría de rayos X, el análisis químico por espectroscopia de rayos X de dispersión de energía y la adsorción física de nitrógeno. Los resultados de XRD revelaron que se formaron el precursor (P) MCM-22 y la zeolita MCM-22. Se observó mediante el análisis XRD de los productos de las síntesis realizadas, que la presencia del tensioactivo CTABr favorece la desorganización de las laminillas. También se concluye que hubo influencia de la acidificación en las propiedades de los productos finales.Neste trabalho foi preparado o precursor (P)MCM-22 a partir do método hidrotérmico em sistema estático e realizadas modificações térmica, deslaminação e acidificação. Esse estudo tem a finalidade otimizar a modificação que promove a desorganização das lamelas do precursor zeolítico e torna os sítios ativos mais acessíveis. O precursor (P)MCM-22 foi preparado sob condições hidrotérmica com temperatura de 150 oC e tempo de cristalização de 7 dias. O processo de deslaminação foi realizado via intumescimento do precursor lamelar com CTABr e posterior esfoliação por sonicação. Foram utilizadas técnicas de caracterização tais como, difratometria de raios X, Análise química por Espectroscopia de Raios X por Energia Dispersiva e Adsorção Física de Nitrogênio. Os resultados de DRX revelaram que o precursor (P)MCM-22 e a zeólita MCM-22 foram formados. Foi observado pelas análises de DRX dos produtos das sínteses realizadas, que a presença do surfactante CTABr promove a desorganização das lamelas. Conclui-se também que houve influência da acidificação nas propriedades dos produtos finais.Research, Society and Development2021-11-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/2253910.33448/rsd-v10i14.22539Research, Society and Development; Vol. 10 No. 14; e599101422539Research, Society and Development; Vol. 10 Núm. 14; e599101422539Research, Society and Development; v. 10 n. 14; e5991014225392525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIporhttps://rsdjournal.org/index.php/rsd/article/view/22539/19931Copyright (c) 2021 Wellington Siqueira Lima; Francisco Alex de Sousa Silva; Paulo Henrique Leite Quintela; Meiry Gláucia Freire Rodrigueshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessLima, Wellington Siqueira Silva, Francisco Alex de Sousa Quintela, Paulo Henrique Leite Rodrigues, Meiry Gláucia Freire 2021-12-04T11:48:39Zoai:ojs.pkp.sfu.ca:article/22539Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:41:40.647280Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Synthesis of the MCM-22 zeolite precursor and thermal, deslamination and acidification modifications
Síntesis del precursor de zeolita MCM-22 y modificacións termal, deslamination y acidification
Síntese do percursor (P)MCM-22 e modificações térmica, deslaminação e acidificação
title Synthesis of the MCM-22 zeolite precursor and thermal, deslamination and acidification modifications
spellingShingle Synthesis of the MCM-22 zeolite precursor and thermal, deslamination and acidification modifications
Lima, Wellington Siqueira
Síntesis
Precursor (P)MCM-22
MCM-22
Calcinación
Delaminación
Acidification.
Synthesis
Precursor (P)MCM-22
MCM-22
Calcination
Deslaminação
Acidificação.
Síntese
Precursor (P)MCM-22
Calcinação
Deslaminação
Acidification.
title_short Synthesis of the MCM-22 zeolite precursor and thermal, deslamination and acidification modifications
title_full Synthesis of the MCM-22 zeolite precursor and thermal, deslamination and acidification modifications
title_fullStr Synthesis of the MCM-22 zeolite precursor and thermal, deslamination and acidification modifications
title_full_unstemmed Synthesis of the MCM-22 zeolite precursor and thermal, deslamination and acidification modifications
title_sort Synthesis of the MCM-22 zeolite precursor and thermal, deslamination and acidification modifications
author Lima, Wellington Siqueira
author_facet Lima, Wellington Siqueira
Silva, Francisco Alex de Sousa
Quintela, Paulo Henrique Leite
Rodrigues, Meiry Gláucia Freire
author_role author
author2 Silva, Francisco Alex de Sousa
Quintela, Paulo Henrique Leite
Rodrigues, Meiry Gláucia Freire
author2_role author
author
author
dc.contributor.author.fl_str_mv Lima, Wellington Siqueira
Silva, Francisco Alex de Sousa
Quintela, Paulo Henrique Leite
Rodrigues, Meiry Gláucia Freire
dc.subject.por.fl_str_mv Síntesis
Precursor (P)MCM-22
MCM-22
Calcinación
Delaminación
Acidification.
Synthesis
Precursor (P)MCM-22
MCM-22
Calcination
Deslaminação
Acidificação.
Síntese
Precursor (P)MCM-22
Calcinação
Deslaminação
Acidification.
topic Síntesis
Precursor (P)MCM-22
MCM-22
Calcinación
Delaminación
Acidification.
Synthesis
Precursor (P)MCM-22
MCM-22
Calcination
Deslaminação
Acidificação.
Síntese
Precursor (P)MCM-22
Calcinação
Deslaminação
Acidification.
description In this work, the precursor (P)MCM-22 was prepared using the hydrothermal method in a static system and thermal modifications, delamination and acidification were carried out. This study aims to optimize the modification that promotes the disorganization of the zeolitic precursor lamellae and makes the active sites more accessible. The precursor (P)MCM-22 was prepared under hydrothermal conditions with a temperature of 150 oC and a crystallization time of 7 days. The delamination process was carried out via swelling of the lamellar precursor with CTABr and subsequent exfoliation by sonication. Characterization techniques such as X-ray diffraction, Chemical analysis by Energy Dispersive X-Ray Spectroscopy and Physical Nitrogen Adsorption were used. It was observed by the XRD analysis of the products of the syntheses carried out, that the presence of the CTABr surfactant promotes the disorganization of the lamellae. It is also concluded that there was an influence of acidification on the properties of the final products.
publishDate 2021
dc.date.none.fl_str_mv 2021-11-14
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/22539
10.33448/rsd-v10i14.22539
url https://rsdjournal.org/index.php/rsd/article/view/22539
identifier_str_mv 10.33448/rsd-v10i14.22539
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/22539/19931
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Research, Society and Development
publisher.none.fl_str_mv Research, Society and Development
dc.source.none.fl_str_mv Research, Society and Development; Vol. 10 No. 14; e599101422539
Research, Society and Development; Vol. 10 Núm. 14; e599101422539
Research, Society and Development; v. 10 n. 14; e599101422539
2525-3409
reponame:Research, Society and Development
instname:Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
instname_str Universidade Federal de Itajubá (UNIFEI)
instacron_str UNIFEI
institution UNIFEI
reponame_str Research, Society and Development
collection Research, Society and Development
repository.name.fl_str_mv Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)
repository.mail.fl_str_mv rsd.articles@gmail.com
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