Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbio

Detalhes bibliográficos
Autor(a) principal: Florentino,A. O.
Data de Publicação: 1997
Outros Autores: Saeki,M. J., Cartraud,P., Magnoux,P., Guisnet,M.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421997000100003
Resumo: HZSM5 zeolite was modified by exchanging proton by niobium (V). Several samples were obtained with various degrees of exchange. Pore volumes and acidity were measured to characterize these exchanged zeolites. Catalytic properties were evaluated with two reaction tests: m-xylene transformation and n-heptane cracking. The introduction of niobium on HZSM5 zeolite decreases the diffusion coefficient of 2-methyl-pentane and increases the zeolite acidity. The sample containing niobium are initially more active in cracking of n-heptane and m-xylene isomerization than HZSM5 alone.
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spelling Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbioHZSM5 zeoliteniobium exchangepore volumeacidityHZSM5 zeolite was modified by exchanging proton by niobium (V). Several samples were obtained with various degrees of exchange. Pore volumes and acidity were measured to characterize these exchanged zeolites. Catalytic properties were evaluated with two reaction tests: m-xylene transformation and n-heptane cracking. The introduction of niobium on HZSM5 zeolite decreases the diffusion coefficient of 2-methyl-pentane and increases the zeolite acidity. The sample containing niobium are initially more active in cracking of n-heptane and m-xylene isomerization than HZSM5 alone.Sociedade Brasileira de Química1997-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421997000100003Química Nova v.20 n.1 1997reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40421997000100003info:eu-repo/semantics/openAccessFlorentino,A. O.Saeki,M. J.Cartraud,P.Magnoux,P.Guisnet,M.por2008-09-18T00:00:00Zoai:scielo:S0100-40421997000100003Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2008-09-18T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbio
title Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbio
spellingShingle Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbio
Florentino,A. O.
HZSM5 zeolite
niobium exchange
pore volume
acidity
title_short Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbio
title_full Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbio
title_fullStr Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbio
title_full_unstemmed Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbio
title_sort Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbio
author Florentino,A. O.
author_facet Florentino,A. O.
Saeki,M. J.
Cartraud,P.
Magnoux,P.
Guisnet,M.
author_role author
author2 Saeki,M. J.
Cartraud,P.
Magnoux,P.
Guisnet,M.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Florentino,A. O.
Saeki,M. J.
Cartraud,P.
Magnoux,P.
Guisnet,M.
dc.subject.por.fl_str_mv HZSM5 zeolite
niobium exchange
pore volume
acidity
topic HZSM5 zeolite
niobium exchange
pore volume
acidity
description HZSM5 zeolite was modified by exchanging proton by niobium (V). Several samples were obtained with various degrees of exchange. Pore volumes and acidity were measured to characterize these exchanged zeolites. Catalytic properties were evaluated with two reaction tests: m-xylene transformation and n-heptane cracking. The introduction of niobium on HZSM5 zeolite decreases the diffusion coefficient of 2-methyl-pentane and increases the zeolite acidity. The sample containing niobium are initially more active in cracking of n-heptane and m-xylene isomerization than HZSM5 alone.
publishDate 1997
dc.date.none.fl_str_mv 1997-02-01
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=S0100-40421997000100003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421997000100003
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40421997000100003
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 Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.20 n.1 1997
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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