Development of Geopolymers for Catalyst Support Applications

Detalhes bibliográficos
Autor(a) principal: Vieira,Leo
Data de Publicação: 2019
Outros Autores: Maschio,Leandro José, Araújo,Emmanuel Péres de, Silva,Adriana Maria da, Vieira,Ricardo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000600202
Resumo: A geopolymer with high specific surface area was synthesized from metakaolin, amorphous silica and KOH, in the absence of foaming or saponification agents. The mixture modelling technique was selected for this study among the Design of Experiments tools, using surface area and total pores volume as response variables. The Si/K = 2.46 and Si/Al = 1.37 ratios lead to the optimal experimental conditions, allowing the formation of a geopolymer having a specific surface area of 75 m2/g and total pores volume of 0.28 cm3/g. The pores had a bimodal pore size distribution (7 and 20 nm). In spite of its amorphous nature, this structure is similar to zeolites in terms of ion exchange and metal ions accommodation. Therefore, this study envisages its application as a catalyst support.
id ABMABCABPOL-1_b22d1fed08a2d057f6c190f01b5a54c6
oai_identifier_str oai:scielo:S1516-14392019000600202
network_acronym_str ABMABCABPOL-1
network_name_str Materials research (São Carlos. Online)
repository_id_str
spelling Development of Geopolymers for Catalyst Support ApplicationsGeopolymerscatalyst supportmetakaolindesign of experimentsA geopolymer with high specific surface area was synthesized from metakaolin, amorphous silica and KOH, in the absence of foaming or saponification agents. The mixture modelling technique was selected for this study among the Design of Experiments tools, using surface area and total pores volume as response variables. The Si/K = 2.46 and Si/Al = 1.37 ratios lead to the optimal experimental conditions, allowing the formation of a geopolymer having a specific surface area of 75 m2/g and total pores volume of 0.28 cm3/g. The pores had a bimodal pore size distribution (7 and 20 nm). In spite of its amorphous nature, this structure is similar to zeolites in terms of ion exchange and metal ions accommodation. Therefore, this study envisages its application as a catalyst support.ABM, ABC, ABPol2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000600202Materials Research v.22 n.6 2019reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2018-0770info:eu-repo/semantics/openAccessVieira,LeoMaschio,Leandro JoséAraújo,Emmanuel Péres deSilva,Adriana Maria daVieira,Ricardoeng2019-11-22T00:00:00Zoai:scielo:S1516-14392019000600202Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2019-11-22T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Development of Geopolymers for Catalyst Support Applications
title Development of Geopolymers for Catalyst Support Applications
spellingShingle Development of Geopolymers for Catalyst Support Applications
Vieira,Leo
Geopolymers
catalyst support
metakaolin
design of experiments
title_short Development of Geopolymers for Catalyst Support Applications
title_full Development of Geopolymers for Catalyst Support Applications
title_fullStr Development of Geopolymers for Catalyst Support Applications
title_full_unstemmed Development of Geopolymers for Catalyst Support Applications
title_sort Development of Geopolymers for Catalyst Support Applications
author Vieira,Leo
author_facet Vieira,Leo
Maschio,Leandro José
Araújo,Emmanuel Péres de
Silva,Adriana Maria da
Vieira,Ricardo
author_role author
author2 Maschio,Leandro José
Araújo,Emmanuel Péres de
Silva,Adriana Maria da
Vieira,Ricardo
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Vieira,Leo
Maschio,Leandro José
Araújo,Emmanuel Péres de
Silva,Adriana Maria da
Vieira,Ricardo
dc.subject.por.fl_str_mv Geopolymers
catalyst support
metakaolin
design of experiments
topic Geopolymers
catalyst support
metakaolin
design of experiments
description A geopolymer with high specific surface area was synthesized from metakaolin, amorphous silica and KOH, in the absence of foaming or saponification agents. The mixture modelling technique was selected for this study among the Design of Experiments tools, using surface area and total pores volume as response variables. The Si/K = 2.46 and Si/Al = 1.37 ratios lead to the optimal experimental conditions, allowing the formation of a geopolymer having a specific surface area of 75 m2/g and total pores volume of 0.28 cm3/g. The pores had a bimodal pore size distribution (7 and 20 nm). In spite of its amorphous nature, this structure is similar to zeolites in terms of ion exchange and metal ions accommodation. Therefore, this study envisages its application as a catalyst support.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
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=S1516-14392019000600202
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000600202
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2018-0770
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 ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.22 n.6 2019
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212675437461504

Registros relacionados