Synthesis of high-silica ZSM-5 with seeds in the presence of ethanol and amine

Detalhes bibliográficos
Autor(a) principal: Mendonça,T. R. D.
Data de Publicação: 2019
Outros Autores: Santos,J. R., Sarmento,L. R. A., Silva,D. C. M., Cysneiros,O. M. S., Silva,A. O. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000300378
Resumo: Abstract The possibility of crystallization of ZSM-5 with high Si/Al ratio was evaluated through the combined use of crystallization seeds and organic compounds that are not conventional directing agents for ZSM-5 (ethanol, methylamine, ethylamine, propylamine, butylamine, isopropylamine and diethylamine) in order to find a less toxic and costly route of synthesis. In addition, the influence of the stirring during the crystallization step on the properties of the ZSM-5 obtained in these synthesis conditions was verified. The obtained zeolites were analyzed by X-ray diffractometry in order to understand the effects of the templates. The analyses of NH3-TPD, nitrogen adsorption, SEM, and TG/DTA were performed for the samples with better crystallinity. The procedure was successfully employed for the synthesis of MFI samples using propylamine as an alternative structure-directing agent. Its mean crystallite size ranged from 23 to 24 nm and was efficient in the cracking reaction of n-hexane.
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network_name_str Cerâmica (São Paulo. Online)
repository_id_str
spelling Synthesis of high-silica ZSM-5 with seeds in the presence of ethanol and amineZSM-5seed crystalshigh silicaaminesethanolAbstract The possibility of crystallization of ZSM-5 with high Si/Al ratio was evaluated through the combined use of crystallization seeds and organic compounds that are not conventional directing agents for ZSM-5 (ethanol, methylamine, ethylamine, propylamine, butylamine, isopropylamine and diethylamine) in order to find a less toxic and costly route of synthesis. In addition, the influence of the stirring during the crystallization step on the properties of the ZSM-5 obtained in these synthesis conditions was verified. The obtained zeolites were analyzed by X-ray diffractometry in order to understand the effects of the templates. The analyses of NH3-TPD, nitrogen adsorption, SEM, and TG/DTA were performed for the samples with better crystallinity. The procedure was successfully employed for the synthesis of MFI samples using propylamine as an alternative structure-directing agent. Its mean crystallite size ranged from 23 to 24 nm and was efficient in the cracking reaction of n-hexane.Associação Brasileira de Cerâmica2019-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000300378Cerâmica v.65 n.375 2019reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-69132019653752705info:eu-repo/semantics/openAccessMendonça,T. R. D.Santos,J. R.Sarmento,L. R. A.Silva,D. C. M.Cysneiros,O. M. S.Silva,A. O. S.eng2019-08-12T00:00:00Zoai:scielo:S0366-69132019000300378Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2019-08-12T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Synthesis of high-silica ZSM-5 with seeds in the presence of ethanol and amine
title Synthesis of high-silica ZSM-5 with seeds in the presence of ethanol and amine
spellingShingle Synthesis of high-silica ZSM-5 with seeds in the presence of ethanol and amine
Mendonça,T. R. D.
ZSM-5
seed crystals
high silica
amines
ethanol
title_short Synthesis of high-silica ZSM-5 with seeds in the presence of ethanol and amine
title_full Synthesis of high-silica ZSM-5 with seeds in the presence of ethanol and amine
title_fullStr Synthesis of high-silica ZSM-5 with seeds in the presence of ethanol and amine
title_full_unstemmed Synthesis of high-silica ZSM-5 with seeds in the presence of ethanol and amine
title_sort Synthesis of high-silica ZSM-5 with seeds in the presence of ethanol and amine
author Mendonça,T. R. D.
author_facet Mendonça,T. R. D.
Santos,J. R.
Sarmento,L. R. A.
Silva,D. C. M.
Cysneiros,O. M. S.
Silva,A. O. S.
author_role author
author2 Santos,J. R.
Sarmento,L. R. A.
Silva,D. C. M.
Cysneiros,O. M. S.
Silva,A. O. S.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Mendonça,T. R. D.
Santos,J. R.
Sarmento,L. R. A.
Silva,D. C. M.
Cysneiros,O. M. S.
Silva,A. O. S.
dc.subject.por.fl_str_mv ZSM-5
seed crystals
high silica
amines
ethanol
topic ZSM-5
seed crystals
high silica
amines
ethanol
description Abstract The possibility of crystallization of ZSM-5 with high Si/Al ratio was evaluated through the combined use of crystallization seeds and organic compounds that are not conventional directing agents for ZSM-5 (ethanol, methylamine, ethylamine, propylamine, butylamine, isopropylamine and diethylamine) in order to find a less toxic and costly route of synthesis. In addition, the influence of the stirring during the crystallization step on the properties of the ZSM-5 obtained in these synthesis conditions was verified. The obtained zeolites were analyzed by X-ray diffractometry in order to understand the effects of the templates. The analyses of NH3-TPD, nitrogen adsorption, SEM, and TG/DTA were performed for the samples with better crystallinity. The procedure was successfully employed for the synthesis of MFI samples using propylamine as an alternative structure-directing agent. Its mean crystallite size ranged from 23 to 24 nm and was efficient in the cracking reaction of n-hexane.
publishDate 2019
dc.date.none.fl_str_mv 2019-09-01
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=S0366-69132019000300378
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000300378
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0366-69132019653752705
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 Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.65 n.375 2019
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
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