O uso de sílica gel organofuncionalizada como agente sequestrante para metais

Detalhes bibliográficos
Autor(a) principal: Airoldi,Claudio
Data de Publicação: 2000
Outros Autores: Farias,Robson Fernandes de
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000400012
Resumo: An overview about the homogeneous and heterogeneous methods of synthesizing silylating agents and applications of the organofunctionalized silica-gel samples was explored. The pendant molecules attached covalently to the inorganic surface displayed important properties to act as sequestrating agents for metals in aqueous and non-aqueous solutions. The large variety of basic centres anchored on organic molecules improve the capacity in adsorbing cations. The increase in adsorption is dependent on the number of basic atoms disposed on the pendant molecules on the surface. The combination of acidic and basicity properties favours the selectivity, such is exemplified by the thiol modified silicas towards mercury (II) cations.
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spelling O uso de sílica gel organofuncionalizada como agente sequestrante para metaissilicaimmobilizationcationsequestrating agentAn overview about the homogeneous and heterogeneous methods of synthesizing silylating agents and applications of the organofunctionalized silica-gel samples was explored. The pendant molecules attached covalently to the inorganic surface displayed important properties to act as sequestrating agents for metals in aqueous and non-aqueous solutions. The large variety of basic centres anchored on organic molecules improve the capacity in adsorbing cations. The increase in adsorption is dependent on the number of basic atoms disposed on the pendant molecules on the surface. The combination of acidic and basicity properties favours the selectivity, such is exemplified by the thiol modified silicas towards mercury (II) cations.Sociedade Brasileira de Química2000-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000400012Química Nova v.23 n.4 2000reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422000000400012info:eu-repo/semantics/openAccessAiroldi,ClaudioFarias,Robson Fernandes depor2006-12-12T00:00:00Zoai:scielo:S0100-40422000000400012Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2006-12-12T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv O uso de sílica gel organofuncionalizada como agente sequestrante para metais
title O uso de sílica gel organofuncionalizada como agente sequestrante para metais
spellingShingle O uso de sílica gel organofuncionalizada como agente sequestrante para metais
Airoldi,Claudio
silica
immobilization
cation
sequestrating agent
title_short O uso de sílica gel organofuncionalizada como agente sequestrante para metais
title_full O uso de sílica gel organofuncionalizada como agente sequestrante para metais
title_fullStr O uso de sílica gel organofuncionalizada como agente sequestrante para metais
title_full_unstemmed O uso de sílica gel organofuncionalizada como agente sequestrante para metais
title_sort O uso de sílica gel organofuncionalizada como agente sequestrante para metais
author Airoldi,Claudio
author_facet Airoldi,Claudio
Farias,Robson Fernandes de
author_role author
author2 Farias,Robson Fernandes de
author2_role author
dc.contributor.author.fl_str_mv Airoldi,Claudio
Farias,Robson Fernandes de
dc.subject.por.fl_str_mv silica
immobilization
cation
sequestrating agent
topic silica
immobilization
cation
sequestrating agent
description An overview about the homogeneous and heterogeneous methods of synthesizing silylating agents and applications of the organofunctionalized silica-gel samples was explored. The pendant molecules attached covalently to the inorganic surface displayed important properties to act as sequestrating agents for metals in aqueous and non-aqueous solutions. The large variety of basic centres anchored on organic molecules improve the capacity in adsorbing cations. The increase in adsorption is dependent on the number of basic atoms disposed on the pendant molecules on the surface. The combination of acidic and basicity properties favours the selectivity, such is exemplified by the thiol modified silicas towards mercury (II) cations.
publishDate 2000
dc.date.none.fl_str_mv 2000-08-01
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=S0100-40422000000400012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000400012
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422000000400012
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.23 n.4 2000
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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