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dc.contributor.author
Goldfarb, Darío L  
dc.contributor.author
Corti, Horacio Roberto  
dc.date.available
2019-03-14T18:25:23Z  
dc.date.issued
2000-09  
dc.identifier.citation
Goldfarb, Darío L; Corti, Horacio Roberto; Electrochemistry in supercritical trifluoromethane; Elsevier Science Inc; Electrochemistry Communications; 2; 9; 9-2000; 663-670  
dc.identifier.issn
1388-2481  
dc.identifier.uri
http://hdl.handle.net/11336/71658  
dc.description.abstract
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.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science Inc  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/  
dc.subject
Decamethylferrocenium Hexafluorophosphate  
dc.subject
Electrical Conductivity  
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Limiting Current  
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Microelectrodes  
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Supercritical Trifluoromethane  
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Tetrabutylammonium Hexafluorophosphate  
dc.subject.classification
Otras Ciencias Químicas  
dc.subject.classification
Ciencias Químicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Electrochemistry in supercritical trifluoromethane  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-03-14T14:08:47Z  
dc.journal.volume
2  
dc.journal.number
9  
dc.journal.pagination
663-670  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Goldfarb, Darío L. Comisión Nacional de Energía Atómica; Argentina  
dc.description.fil
Fil: Corti, Horacio Roberto. Universidad Nacional de General Sarmiento; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.journal.title
Electrochemistry Communications  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1388248100000990  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/S1388-2481(00)00099-0