Electrochemistry in supercritical trifluoromethane

Autores
Goldfarb, Darío L; Corti, Horacio Roberto
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The use of trifluoromethane (CHF3) as a solvent for electrochemical studies in supercritical conditions is analyzed. The dielectric and electrical conductivity of supercritical CHF3 was measured at 323.15 K at several densities. The solubility and electrical conductivity of tetrabutylammonium hexafluorophosphate (TBAPF6) and decamethylferrocenium hexafluorophosphate (Fe(Cp *)2PF6) in supercritical CHF3 were measured at 323.15 K as a function of density. It was found that, in spite of the high ion pair formation of the TBAPF6 in the supercritical solvent, this salt is a suitable supporting electrolyte, having a conductivity much higher than that reported for other electrolytes in low dielectric constant supercritical solvents. The limiting currents measured for decamethylferrocene (Fe(Cp *)2) and decamethylferrocenium hexafluorophosphate (Fe(Cp *)2PF6) at a platinum microdisc in supercritical CHF3 at several densities and 323.15 K, show the feasibility of using the proposed supercritical system as a model for electrochemical studies in variable density media. The effect of concentration of the supporting electrolyte on the limiting current at the microelectrode is qualitatively discussed in terms of a recent theory which takes into account the ion association of the supporting and electroactive electrolytes.
Fil: Goldfarb, Darío L. Comisión Nacional de Energía Atómica; Argentina
Fil: Corti, Horacio Roberto. Universidad Nacional de General Sarmiento; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Decamethylferrocenium Hexafluorophosphate
Electrical Conductivity
Limiting Current
Microelectrodes
Supercritical Trifluoromethane
Tetrabutylammonium Hexafluorophosphate
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/71658
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/71658
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Electrochemistry in supercritical trifluoromethaneGoldfarb, Darío LCorti, Horacio RobertoDecamethylferrocenium HexafluorophosphateElectrical ConductivityLimiting CurrentMicroelectrodesSupercritical TrifluoromethaneTetrabutylammonium Hexafluorophosphatehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The use of trifluoromethane (CHF3) as a solvent for electrochemical studies in supercritical conditions is analyzed. The dielectric and electrical conductivity of supercritical CHF3 was measured at 323.15 K at several densities. The solubility and electrical conductivity of tetrabutylammonium hexafluorophosphate (TBAPF6) and decamethylferrocenium hexafluorophosphate (Fe(Cp *)2PF6) in supercritical CHF3 were measured at 323.15 K as a function of density. It was found that, in spite of the high ion pair formation of the TBAPF6 in the supercritical solvent, this salt is a suitable supporting electrolyte, having a conductivity much higher than that reported for other electrolytes in low dielectric constant supercritical solvents. The limiting currents measured for decamethylferrocene (Fe(Cp *)2) and decamethylferrocenium hexafluorophosphate (Fe(Cp *)2PF6) at a platinum microdisc in supercritical CHF3 at several densities and 323.15 K, show the feasibility of using the proposed supercritical system as a model for electrochemical studies in variable density media. The effect of concentration of the supporting electrolyte on the limiting current at the microelectrode is qualitatively discussed in terms of a recent theory which takes into account the ion association of the supporting and electroactive electrolytes.Fil: Goldfarb, Darío L. Comisión Nacional de Energía Atómica; ArgentinaFil: Corti, Horacio Roberto. Universidad Nacional de General Sarmiento; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science Inc2000-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71658Goldfarb, Darío L; Corti, Horacio Roberto; Electrochemistry in supercritical trifluoromethane; Elsevier Science Inc; Electrochemistry Communications; 2; 9; 9-2000; 663-6701388-2481CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1388248100000990info:eu-repo/semantics/altIdentifier/doi/10.1016/S1388-2481(00)00099-0info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:48:34Zoai:ri.conicet.gov.ar:11336/71658instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:48:35.119CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Electrochemistry in supercritical trifluoromethane
title Electrochemistry in supercritical trifluoromethane
spellingShingle Electrochemistry in supercritical trifluoromethane
Goldfarb, Darío L
Decamethylferrocenium Hexafluorophosphate
Electrical Conductivity
Limiting Current
Microelectrodes
Supercritical Trifluoromethane
Tetrabutylammonium Hexafluorophosphate
title_short Electrochemistry in supercritical trifluoromethane
title_full Electrochemistry in supercritical trifluoromethane
title_fullStr Electrochemistry in supercritical trifluoromethane
title_full_unstemmed Electrochemistry in supercritical trifluoromethane
title_sort Electrochemistry in supercritical trifluoromethane
dc.creator.none.fl_str_mv Goldfarb, Darío L
Corti, Horacio Roberto
author Goldfarb, Darío L
author_facet Goldfarb, Darío L
Corti, Horacio Roberto
author_role author
author2 Corti, Horacio Roberto
author2_role author
dc.subject.none.fl_str_mv Decamethylferrocenium Hexafluorophosphate
Electrical Conductivity
Limiting Current
Microelectrodes
Supercritical Trifluoromethane
Tetrabutylammonium Hexafluorophosphate
topic Decamethylferrocenium Hexafluorophosphate
Electrical Conductivity
Limiting Current
Microelectrodes
Supercritical Trifluoromethane
Tetrabutylammonium Hexafluorophosphate
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The use of trifluoromethane (CHF3) as a solvent for electrochemical studies in supercritical conditions is analyzed. The dielectric and electrical conductivity of supercritical CHF3 was measured at 323.15 K at several densities. The solubility and electrical conductivity of tetrabutylammonium hexafluorophosphate (TBAPF6) and decamethylferrocenium hexafluorophosphate (Fe(Cp *)2PF6) in supercritical CHF3 were measured at 323.15 K as a function of density. It was found that, in spite of the high ion pair formation of the TBAPF6 in the supercritical solvent, this salt is a suitable supporting electrolyte, having a conductivity much higher than that reported for other electrolytes in low dielectric constant supercritical solvents. The limiting currents measured for decamethylferrocene (Fe(Cp *)2) and decamethylferrocenium hexafluorophosphate (Fe(Cp *)2PF6) at a platinum microdisc in supercritical CHF3 at several densities and 323.15 K, show the feasibility of using the proposed supercritical system as a model for electrochemical studies in variable density media. The effect of concentration of the supporting electrolyte on the limiting current at the microelectrode is qualitatively discussed in terms of a recent theory which takes into account the ion association of the supporting and electroactive electrolytes.
Fil: Goldfarb, Darío L. Comisión Nacional de Energía Atómica; Argentina
Fil: Corti, Horacio Roberto. Universidad Nacional de General Sarmiento; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The use of trifluoromethane (CHF3) as a solvent for electrochemical studies in supercritical conditions is analyzed. The dielectric and electrical conductivity of supercritical CHF3 was measured at 323.15 K at several densities. The solubility and electrical conductivity of tetrabutylammonium hexafluorophosphate (TBAPF6) and decamethylferrocenium hexafluorophosphate (Fe(Cp *)2PF6) in supercritical CHF3 were measured at 323.15 K as a function of density. It was found that, in spite of the high ion pair formation of the TBAPF6 in the supercritical solvent, this salt is a suitable supporting electrolyte, having a conductivity much higher than that reported for other electrolytes in low dielectric constant supercritical solvents. The limiting currents measured for decamethylferrocene (Fe(Cp *)2) and decamethylferrocenium hexafluorophosphate (Fe(Cp *)2PF6) at a platinum microdisc in supercritical CHF3 at several densities and 323.15 K, show the feasibility of using the proposed supercritical system as a model for electrochemical studies in variable density media. The effect of concentration of the supporting electrolyte on the limiting current at the microelectrode is qualitatively discussed in terms of a recent theory which takes into account the ion association of the supporting and electroactive electrolytes.
publishDate 2000
dc.date.none.fl_str_mv 2000-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/71658
Goldfarb, Darío L; Corti, Horacio Roberto; Electrochemistry in supercritical trifluoromethane; Elsevier Science Inc; Electrochemistry Communications; 2; 9; 9-2000; 663-670
1388-2481
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71658
identifier_str_mv Goldfarb, Darío L; Corti, Horacio Roberto; Electrochemistry in supercritical trifluoromethane; Elsevier Science Inc; Electrochemistry Communications; 2; 9; 9-2000; 663-670
1388-2481
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1388248100000990
info:eu-repo/semantics/altIdentifier/doi/10.1016/S1388-2481(00)00099-0
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Inc
publisher.none.fl_str_mv Elsevier Science Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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