Influence of Alumina Phases on the Molybdenum Adsorption Capacity and Chemical Stability for 99Mo/99mTc Generators Columns
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
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=S1516-14392016000400791 |
Resumo: | Technetium-99m is the clinically most used radionuclide worldwide. Although many techniques can be applied to separate 99Mo and 99mTc, the most commonly used method is the column chromatography with alumina as stationary phase. However, the alumina nowadays used has limited adsorption capacity of molybdate ions which implies the need to develop or improve materials to produce high specific activity generators. In this paper, alumina was obtained by a solid state method and heat treatments at different conditions. The powders had a microstructure with porous particles of γ, δ, θ and α-Al2O3 phases as well as specific surface area between 36 and 312 m2 g-1. Most interesting results were reached by powders calcined at 900ºC for 5 hours which had high chemical stability and a molybdenum adsorption capacity of 92.45 mg Mo per g alumina. |
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Influence of Alumina Phases on the Molybdenum Adsorption Capacity and Chemical Stability for 99Mo/99mTc Generators Columnsalumina99Mo/99mTc generatorchromatographyTechnetium-99m is the clinically most used radionuclide worldwide. Although many techniques can be applied to separate 99Mo and 99mTc, the most commonly used method is the column chromatography with alumina as stationary phase. However, the alumina nowadays used has limited adsorption capacity of molybdate ions which implies the need to develop or improve materials to produce high specific activity generators. In this paper, alumina was obtained by a solid state method and heat treatments at different conditions. The powders had a microstructure with porous particles of γ, δ, θ and α-Al2O3 phases as well as specific surface area between 36 and 312 m2 g-1. Most interesting results were reached by powders calcined at 900ºC for 5 hours which had high chemical stability and a molybdenum adsorption capacity of 92.45 mg Mo per g alumina.ABM, ABC, ABPol2016-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000400791Materials Research v.19 n.4 2016reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-MR-2015-0560info:eu-repo/semantics/openAccessGuedes-Silva,Cecilia C.Ferreira,Thiago dos SantosCarvalho,Flávio M.S.Paula,Carolina M. deOtubo,Larissaeng2016-09-16T00:00:00Zoai:scielo:S1516-14392016000400791Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2016-09-16T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Influence of Alumina Phases on the Molybdenum Adsorption Capacity and Chemical Stability for 99Mo/99mTc Generators Columns |
title |
Influence of Alumina Phases on the Molybdenum Adsorption Capacity and Chemical Stability for 99Mo/99mTc Generators Columns |
spellingShingle |
Influence of Alumina Phases on the Molybdenum Adsorption Capacity and Chemical Stability for 99Mo/99mTc Generators Columns Guedes-Silva,Cecilia C. alumina 99Mo/99mTc generator chromatography |
title_short |
Influence of Alumina Phases on the Molybdenum Adsorption Capacity and Chemical Stability for 99Mo/99mTc Generators Columns |
title_full |
Influence of Alumina Phases on the Molybdenum Adsorption Capacity and Chemical Stability for 99Mo/99mTc Generators Columns |
title_fullStr |
Influence of Alumina Phases on the Molybdenum Adsorption Capacity and Chemical Stability for 99Mo/99mTc Generators Columns |
title_full_unstemmed |
Influence of Alumina Phases on the Molybdenum Adsorption Capacity and Chemical Stability for 99Mo/99mTc Generators Columns |
title_sort |
Influence of Alumina Phases on the Molybdenum Adsorption Capacity and Chemical Stability for 99Mo/99mTc Generators Columns |
author |
Guedes-Silva,Cecilia C. |
author_facet |
Guedes-Silva,Cecilia C. Ferreira,Thiago dos Santos Carvalho,Flávio M.S. Paula,Carolina M. de Otubo,Larissa |
author_role |
author |
author2 |
Ferreira,Thiago dos Santos Carvalho,Flávio M.S. Paula,Carolina M. de Otubo,Larissa |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Guedes-Silva,Cecilia C. Ferreira,Thiago dos Santos Carvalho,Flávio M.S. Paula,Carolina M. de Otubo,Larissa |
dc.subject.por.fl_str_mv |
alumina 99Mo/99mTc generator chromatography |
topic |
alumina 99Mo/99mTc generator chromatography |
description |
Technetium-99m is the clinically most used radionuclide worldwide. Although many techniques can be applied to separate 99Mo and 99mTc, the most commonly used method is the column chromatography with alumina as stationary phase. However, the alumina nowadays used has limited adsorption capacity of molybdate ions which implies the need to develop or improve materials to produce high specific activity generators. In this paper, alumina was obtained by a solid state method and heat treatments at different conditions. The powders had a microstructure with porous particles of γ, δ, θ and α-Al2O3 phases as well as specific surface area between 36 and 312 m2 g-1. Most interesting results were reached by powders calcined at 900ºC for 5 hours which had high chemical stability and a molybdenum adsorption capacity of 92.45 mg Mo per g alumina. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-08-01 |
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=S1516-14392016000400791 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000400791 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-5373-MR-2015-0560 |
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.19 n.4 2016 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_ |
1754212667943288832 |