dc.creator | Goldfarb, Darío L | |
dc.creator | Corti, Horacio Roberto | |
dc.date.accessioned | 2019-03-14T18:25:23Z | |
dc.date.accessioned | 2022-10-15T04:32:03Z | |
dc.date.available | 2019-03-14T18:25:23Z | |
dc.date.available | 2022-10-15T04:32:03Z | |
dc.date.created | 2019-03-14T18:25:23Z | |
dc.date.issued | 2000-09 | |
dc.identifier | Goldfarb, Darío L; Corti, Horacio Roberto; Electrochemistry in supercritical trifluoromethane; Elsevier Science Inc; Electrochemistry Communications; 2; 9; 9-2000; 663-670 | |
dc.identifier | 1388-2481 | |
dc.identifier | http://hdl.handle.net/11336/71658 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4345445 | |
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.language | eng | |
dc.publisher | Elsevier Science Inc | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1388248100000990 | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/S1388-2481(00)00099-0 | |
dc.rights | https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject | Decamethylferrocenium Hexafluorophosphate | |
dc.subject | Electrical Conductivity | |
dc.subject | Limiting Current | |
dc.subject | Microelectrodes | |
dc.subject | Supercritical Trifluoromethane | |
dc.subject | Tetrabutylammonium Hexafluorophosphate | |
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 | |