SÍNTESE E PROPRIEDADES DE SÍLICAS HÍBRIDAS CONTENDO SURFACTANTES CETILTRIALQUILAMÔNIO

Detalhes bibliográficos
Autor(a) principal: Campos,Ana Flavia P. de
Data de Publicação: 2016
Outros Autores: Ferreira,Aurélia Retiella O., Cardoso,Dilson
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000300279
Resumo: This work presents the synthesis of silicas containing cetyltrialkylammoniun surfactants in their mesopores. Initially, the aqueous dispersions of these surfactants were characterized by small-angle X-ray scattering (SAXS). The hybrid silicas obtained from these dispersions were evaluated by X-ray diffractometry (XRD) and nitrogen physisorption. The XRD showed that, increasing the head size, there is a shift of the peak corresponding to the (100) diffraction plane to smaller 2θ angles, which indicates an increase in the silicas porous diameter. The increasing of the silicas porous diameter was confirmed by nitrogen physisorption. The base catalytic properties of these hybrid silicas were evaluated in the transesterification reaction showing that those containing the cations C16Et3+ and C16Pr3+ showed better performance.
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spelling SÍNTESE E PROPRIEDADES DE SÍLICAS HÍBRIDAS CONTENDO SURFACTANTES CETILTRIALQUILAMÔNIOhybrid silicascations cetyltrialkylammoniumMCM-41This work presents the synthesis of silicas containing cetyltrialkylammoniun surfactants in their mesopores. Initially, the aqueous dispersions of these surfactants were characterized by small-angle X-ray scattering (SAXS). The hybrid silicas obtained from these dispersions were evaluated by X-ray diffractometry (XRD) and nitrogen physisorption. The XRD showed that, increasing the head size, there is a shift of the peak corresponding to the (100) diffraction plane to smaller 2θ angles, which indicates an increase in the silicas porous diameter. The increasing of the silicas porous diameter was confirmed by nitrogen physisorption. The base catalytic properties of these hybrid silicas were evaluated in the transesterification reaction showing that those containing the cations C16Et3+ and C16Pr3+ showed better performance.Sociedade Brasileira de Química2016-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000300279Química Nova v.39 n.3 2016reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0100-4042.20160033info:eu-repo/semantics/openAccessCampos,Ana Flavia P. deFerreira,Aurélia Retiella O.Cardoso,Dilsonpor2016-05-10T00:00:00Zoai:scielo:S0100-40422016000300279Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2016-05-10T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv SÍNTESE E PROPRIEDADES DE SÍLICAS HÍBRIDAS CONTENDO SURFACTANTES CETILTRIALQUILAMÔNIO
title SÍNTESE E PROPRIEDADES DE SÍLICAS HÍBRIDAS CONTENDO SURFACTANTES CETILTRIALQUILAMÔNIO
spellingShingle SÍNTESE E PROPRIEDADES DE SÍLICAS HÍBRIDAS CONTENDO SURFACTANTES CETILTRIALQUILAMÔNIO
Campos,Ana Flavia P. de
hybrid silicas
cations cetyltrialkylammonium
MCM-41
title_short SÍNTESE E PROPRIEDADES DE SÍLICAS HÍBRIDAS CONTENDO SURFACTANTES CETILTRIALQUILAMÔNIO
title_full SÍNTESE E PROPRIEDADES DE SÍLICAS HÍBRIDAS CONTENDO SURFACTANTES CETILTRIALQUILAMÔNIO
title_fullStr SÍNTESE E PROPRIEDADES DE SÍLICAS HÍBRIDAS CONTENDO SURFACTANTES CETILTRIALQUILAMÔNIO
title_full_unstemmed SÍNTESE E PROPRIEDADES DE SÍLICAS HÍBRIDAS CONTENDO SURFACTANTES CETILTRIALQUILAMÔNIO
title_sort SÍNTESE E PROPRIEDADES DE SÍLICAS HÍBRIDAS CONTENDO SURFACTANTES CETILTRIALQUILAMÔNIO
author Campos,Ana Flavia P. de
author_facet Campos,Ana Flavia P. de
Ferreira,Aurélia Retiella O.
Cardoso,Dilson
author_role author
author2 Ferreira,Aurélia Retiella O.
Cardoso,Dilson
author2_role author
author
dc.contributor.author.fl_str_mv Campos,Ana Flavia P. de
Ferreira,Aurélia Retiella O.
Cardoso,Dilson
dc.subject.por.fl_str_mv hybrid silicas
cations cetyltrialkylammonium
MCM-41
topic hybrid silicas
cations cetyltrialkylammonium
MCM-41
description This work presents the synthesis of silicas containing cetyltrialkylammoniun surfactants in their mesopores. Initially, the aqueous dispersions of these surfactants were characterized by small-angle X-ray scattering (SAXS). The hybrid silicas obtained from these dispersions were evaluated by X-ray diffractometry (XRD) and nitrogen physisorption. The XRD showed that, increasing the head size, there is a shift of the peak corresponding to the (100) diffraction plane to smaller 2θ angles, which indicates an increase in the silicas porous diameter. The increasing of the silicas porous diameter was confirmed by nitrogen physisorption. The base catalytic properties of these hybrid silicas were evaluated in the transesterification reaction showing that those containing the cations C16Et3+ and C16Pr3+ showed better performance.
publishDate 2016
dc.date.none.fl_str_mv 2016-04-01
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=S0100-40422016000300279
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422016000300279
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.5935/0100-4042.20160033
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.39 n.3 2016
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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