Síntese eletroquímica do ion ferrato(VI)

Detalhes bibliográficos
Autor(a) principal: De Luca, Maria Augusta
Data de Publicação: 2003
Outros Autores: De Luca, Sérgio João, Santana, Maria Alice
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/72978
Resumo: The optimization of ferrate(VI) ion generation has been studied due to its favorable characteristics for application in several fields, including environmental quality control. The paper presents the best conditions for electrolytic generation of ferrate(VI) in alkaline media. An appropriate electrolyte was NaOH, 10 mol/L. Circulation of the electrolyte solution was important to avoid acidification close to the anode surface. An anode pre-cleaning with 10% HCl was more efficient than a cathodic pre-polarization. Among the distinct anode materials tested, pig iron showed the best performance, allowing up to 20 g/L of Na2FeO4, in 10 mol/L NaOH solution to be obtained, after 7 h of reactor operation, which is a concentration higher than those found in literature for alternative processes.
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spelling De Luca, Maria AugustaDe Luca, Sérgio JoãoSantana, Maria Alice2013-07-03T01:42:42Z20030100-4042http://hdl.handle.net/10183/72978000369981The optimization of ferrate(VI) ion generation has been studied due to its favorable characteristics for application in several fields, including environmental quality control. The paper presents the best conditions for electrolytic generation of ferrate(VI) in alkaline media. An appropriate electrolyte was NaOH, 10 mol/L. Circulation of the electrolyte solution was important to avoid acidification close to the anode surface. An anode pre-cleaning with 10% HCl was more efficient than a cathodic pre-polarization. Among the distinct anode materials tested, pig iron showed the best performance, allowing up to 20 g/L of Na2FeO4, in 10 mol/L NaOH solution to be obtained, after 7 h of reactor operation, which is a concentration higher than those found in literature for alternative processes.application/pdfporQuímica nova. São Paulo. Vol. 26, n. 3 (2003), p. 420-24Ferrato(vi) : SínteseFerrato(vi) : Oxidação anódicaFerrate(VI)ElectrosynthesisAnodic materialsSíntese eletroquímica do ion ferrato(VI)Eletrochemical synthesis of iron(vi) ferrate info:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000369981.pdf000369981.pdfTexto completoapplication/pdf376990http://www.lume.ufrgs.br/bitstream/10183/72978/1/000369981.pdf3b8ea07404edc4ba87f1af8ccb22053bMD51TEXT000369981.pdf.txt000369981.pdf.txtExtracted Texttext/plain21463http://www.lume.ufrgs.br/bitstream/10183/72978/2/000369981.pdf.txtc5d9e5434efeb332c3957b6d8c4b2fcfMD52THUMBNAIL000369981.pdf.jpg000369981.pdf.jpgGenerated Thumbnailimage/jpeg1993http://www.lume.ufrgs.br/bitstream/10183/72978/3/000369981.pdf.jpg48a57d61596347580a2f554d08902bf3MD5310183/729782018-10-15 08:06:00.444oai:www.lume.ufrgs.br:10183/72978Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-15T11:06Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Síntese eletroquímica do ion ferrato(VI)
dc.title.alternative.en.fl_str_mv Eletrochemical synthesis of iron(vi) ferrate
title Síntese eletroquímica do ion ferrato(VI)
spellingShingle Síntese eletroquímica do ion ferrato(VI)
De Luca, Maria Augusta
Ferrato(vi) : Síntese
Ferrato(vi) : Oxidação anódica
Ferrate(VI)
Electrosynthesis
Anodic materials
title_short Síntese eletroquímica do ion ferrato(VI)
title_full Síntese eletroquímica do ion ferrato(VI)
title_fullStr Síntese eletroquímica do ion ferrato(VI)
title_full_unstemmed Síntese eletroquímica do ion ferrato(VI)
title_sort Síntese eletroquímica do ion ferrato(VI)
author De Luca, Maria Augusta
author_facet De Luca, Maria Augusta
De Luca, Sérgio João
Santana, Maria Alice
author_role author
author2 De Luca, Sérgio João
Santana, Maria Alice
author2_role author
author
dc.contributor.author.fl_str_mv De Luca, Maria Augusta
De Luca, Sérgio João
Santana, Maria Alice
dc.subject.por.fl_str_mv Ferrato(vi) : Síntese
Ferrato(vi) : Oxidação anódica
topic Ferrato(vi) : Síntese
Ferrato(vi) : Oxidação anódica
Ferrate(VI)
Electrosynthesis
Anodic materials
dc.subject.eng.fl_str_mv Ferrate(VI)
Electrosynthesis
Anodic materials
description The optimization of ferrate(VI) ion generation has been studied due to its favorable characteristics for application in several fields, including environmental quality control. The paper presents the best conditions for electrolytic generation of ferrate(VI) in alkaline media. An appropriate electrolyte was NaOH, 10 mol/L. Circulation of the electrolyte solution was important to avoid acidification close to the anode surface. An anode pre-cleaning with 10% HCl was more efficient than a cathodic pre-polarization. Among the distinct anode materials tested, pig iron showed the best performance, allowing up to 20 g/L of Na2FeO4, in 10 mol/L NaOH solution to be obtained, after 7 h of reactor operation, which is a concentration higher than those found in literature for alternative processes.
publishDate 2003
dc.date.issued.fl_str_mv 2003
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dc.identifier.issn.pt_BR.fl_str_mv 0100-4042
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dc.language.iso.fl_str_mv por
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dc.relation.ispartof.pt_BR.fl_str_mv Química nova. São Paulo. Vol. 26, n. 3 (2003), p. 420-24
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