Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane
The diffusion coefficients of decamethylferrocene (Fe(Cp*) 2) and decamethylferrocenium hexafluorophosphate (Fe(Cp*) 2PF 6) in supercritical trifluoromethane (CHF 3) were measured at a temperature of 323.15 K, as a function of density, with tetrabutylammonium hexafluorophosphate (TBAPF 6) as the sup...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_15206106_v108_n10_p3368_Goldfarb |
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todo:paper_15206106_v108_n10_p3368_Goldfarb2023-10-03T16:20:05Z Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane Goldfarb, D.L. Corti, H.R. Critical density Supercritical solvents Aromatic hydrocarbons Diffusion Electric conductivity Electrochemistry Electrolytes Phosphates Probability density function Solvents Supercritical fluids Thermal effects Organic compounds The diffusion coefficients of decamethylferrocene (Fe(Cp*) 2) and decamethylferrocenium hexafluorophosphate (Fe(Cp*) 2PF 6) in supercritical trifluoromethane (CHF 3) were measured at a temperature of 323.15 K, as a function of density, with tetrabutylammonium hexafluorophosphate (TBAPF 6) as the supporting electrolyte, using a voltammetric technique on a platinum microelectrode. The diffusion in subcritical CHF 3 was also studied, to analyze the differences in the behavior of both solutes in the low- and high-density regions. Application of the Oldham, Cardwell, Santos, and Bond theory allowed the effect of ion pairing on the limiting current to be considered. The density dependence of the diffusion coefficients of the different species has been discussed on the basis of the continuum hydrodynamic model and the clustering of solvent around solute molecules in the low-density supercritical region. The predictions of the compressible continuum model for the case of the diffusion of the free ions and the ion pair also have been discussed. Fil:Goldfarb, D.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Corti, H.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15206106_v108_n10_p3368_Goldfarb |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Critical density Supercritical solvents Aromatic hydrocarbons Diffusion Electric conductivity Electrochemistry Electrolytes Phosphates Probability density function Solvents Supercritical fluids Thermal effects Organic compounds |
| spellingShingle |
Critical density Supercritical solvents Aromatic hydrocarbons Diffusion Electric conductivity Electrochemistry Electrolytes Phosphates Probability density function Solvents Supercritical fluids Thermal effects Organic compounds Goldfarb, D.L. Corti, H.R. Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane |
| topic_facet |
Critical density Supercritical solvents Aromatic hydrocarbons Diffusion Electric conductivity Electrochemistry Electrolytes Phosphates Probability density function Solvents Supercritical fluids Thermal effects Organic compounds |
| description |
The diffusion coefficients of decamethylferrocene (Fe(Cp*) 2) and decamethylferrocenium hexafluorophosphate (Fe(Cp*) 2PF 6) in supercritical trifluoromethane (CHF 3) were measured at a temperature of 323.15 K, as a function of density, with tetrabutylammonium hexafluorophosphate (TBAPF 6) as the supporting electrolyte, using a voltammetric technique on a platinum microelectrode. The diffusion in subcritical CHF 3 was also studied, to analyze the differences in the behavior of both solutes in the low- and high-density regions. Application of the Oldham, Cardwell, Santos, and Bond theory allowed the effect of ion pairing on the limiting current to be considered. The density dependence of the diffusion coefficients of the different species has been discussed on the basis of the continuum hydrodynamic model and the clustering of solvent around solute molecules in the low-density supercritical region. The predictions of the compressible continuum model for the case of the diffusion of the free ions and the ion pair also have been discussed. |
| format |
JOUR |
| author |
Goldfarb, D.L. Corti, H.R. |
| author_facet |
Goldfarb, D.L. Corti, H.R. |
| author_sort |
Goldfarb, D.L. |
| title |
Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane |
| title_short |
Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane |
| title_full |
Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane |
| title_fullStr |
Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane |
| title_full_unstemmed |
Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane |
| title_sort |
diffusion of decamethylferrocene and decamethylferrocenium hexafluorophosphate in supercritical trifluoromethane |
| url |
http://hdl.handle.net/20.500.12110/paper_15206106_v108_n10_p3368_Goldfarb |
| work_keys_str_mv |
AT goldfarbdl diffusionofdecamethylferroceneanddecamethylferroceniumhexafluorophosphateinsupercriticaltrifluoromethane AT cortihr diffusionofdecamethylferroceneanddecamethylferroceniumhexafluorophosphateinsupercriticaltrifluoromethane |
| _version_ |
1782029181510483968 |