A study on the Deactivation of Usy Zeolites with Different Rare Earth Contents

Detalhes bibliográficos
Autor(a) principal: Henriques,C.A.
Data de Publicação: 1998
Outros Autores: Santos,J.O.J., Polato,C.M.S., Valle,M.L. Murta, Aguiar,E.F.S., Monteiro,J.L.F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Chemical Engineering
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321998000200003
Resumo: The deactivation of USY zeolites with different rare earth contents due to the coke formed from n-heptane at 450oC was studied. The results show that the presence of rare earth elements decreases the cracking and coking activities, increasing catalytic stability. However, reaction selectivity was not significantly influenced. The greater the rare earth content, the lower the coking rates and the coke contents. The TPO/DSC profiles suggested that the catalytic effect of the rare earth elements promoted coke oxidation.
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spelling A study on the Deactivation of Usy Zeolites with Different Rare Earth ContentsCokedeactivationREY zeolitesThe deactivation of USY zeolites with different rare earth contents due to the coke formed from n-heptane at 450oC was studied. The results show that the presence of rare earth elements decreases the cracking and coking activities, increasing catalytic stability. However, reaction selectivity was not significantly influenced. The greater the rare earth content, the lower the coking rates and the coke contents. The TPO/DSC profiles suggested that the catalytic effect of the rare earth elements promoted coke oxidation.Brazilian Society of Chemical Engineering1998-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321998000200003Brazilian Journal of Chemical Engineering v.15 n.2 1998reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66321998000200003info:eu-repo/semantics/openAccessHenriques,C.A.Santos,J.O.J.Polato,C.M.S.Valle,M.L. MurtaAguiar,E.F.S.Monteiro,J.L.F.eng1998-10-09T00:00:00Zoai:scielo:S0104-66321998000200003Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:1998-10-09T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv A study on the Deactivation of Usy Zeolites with Different Rare Earth Contents
title A study on the Deactivation of Usy Zeolites with Different Rare Earth Contents
spellingShingle A study on the Deactivation of Usy Zeolites with Different Rare Earth Contents
Henriques,C.A.
Coke
deactivation
REY zeolites
title_short A study on the Deactivation of Usy Zeolites with Different Rare Earth Contents
title_full A study on the Deactivation of Usy Zeolites with Different Rare Earth Contents
title_fullStr A study on the Deactivation of Usy Zeolites with Different Rare Earth Contents
title_full_unstemmed A study on the Deactivation of Usy Zeolites with Different Rare Earth Contents
title_sort A study on the Deactivation of Usy Zeolites with Different Rare Earth Contents
author Henriques,C.A.
author_facet Henriques,C.A.
Santos,J.O.J.
Polato,C.M.S.
Valle,M.L. Murta
Aguiar,E.F.S.
Monteiro,J.L.F.
author_role author
author2 Santos,J.O.J.
Polato,C.M.S.
Valle,M.L. Murta
Aguiar,E.F.S.
Monteiro,J.L.F.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Henriques,C.A.
Santos,J.O.J.
Polato,C.M.S.
Valle,M.L. Murta
Aguiar,E.F.S.
Monteiro,J.L.F.
dc.subject.por.fl_str_mv Coke
deactivation
REY zeolites
topic Coke
deactivation
REY zeolites
description The deactivation of USY zeolites with different rare earth contents due to the coke formed from n-heptane at 450oC was studied. The results show that the presence of rare earth elements decreases the cracking and coking activities, increasing catalytic stability. However, reaction selectivity was not significantly influenced. The greater the rare earth content, the lower the coking rates and the coke contents. The TPO/DSC profiles suggested that the catalytic effect of the rare earth elements promoted coke oxidation.
publishDate 1998
dc.date.none.fl_str_mv 1998-06-01
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=S0104-66321998000200003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321998000200003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-66321998000200003
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 Brazilian Society of Chemical Engineering
publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
dc.source.none.fl_str_mv Brazilian Journal of Chemical Engineering v.15 n.2 1998
reponame:Brazilian Journal of Chemical Engineering
instname:Associação Brasileira de Engenharia Química (ABEQ)
instacron:ABEQ
instname_str Associação Brasileira de Engenharia Química (ABEQ)
instacron_str ABEQ
institution ABEQ
reponame_str Brazilian Journal of Chemical Engineering
collection Brazilian Journal of Chemical Engineering
repository.name.fl_str_mv Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)
repository.mail.fl_str_mv rgiudici@usp.br||rgiudici@usp.br
_version_ 1754213170337021952

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