Electrical Conductivity of Decamethylferrocenium Hexafluorophosphate and Tetrabutylammonium Hexafluorophosphate in Supercritical Trifluoromethane

The electrical conductivity of tetrabutylammonium hexafluorophosphate (TBAPF 6) and decamethylferrocenium hexafluorophosphate (Fe(Cp*) 2PF 6) in supercritical trifluoromethane (CHF 3 was measured as a function of density (at pressures of 6-16 MPa) at 323.15 K. The concentration dependence of the mol...

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Autores principales: Goldfarb, D.L., Corti, H.R.
Formato: JOUR
Materias:
Chronocoulometry
Ohmic distortion
Carbon dioxide
Cyclic voltammetry
Diffusion
Electric conductivity
Phosphates
Probability density function
Salts
Solvents
Thermal effects
Toxicity
Organic compounds
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15206106_v108_n10_p3358_Goldfarb
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_15206106_v108_n10_p3358_Goldfarb2023-10-03T16:20:05Z Electrical Conductivity of Decamethylferrocenium Hexafluorophosphate and Tetrabutylammonium Hexafluorophosphate in Supercritical Trifluoromethane Goldfarb, D.L. Corti, H.R. Chronocoulometry Ohmic distortion Carbon dioxide Cyclic voltammetry Diffusion Electric conductivity Phosphates Probability density function Salts Solvents Thermal effects Toxicity Organic compounds The electrical conductivity of tetrabutylammonium hexafluorophosphate (TBAPF 6) and decamethylferrocenium hexafluorophosphate (Fe(Cp*) 2PF 6) in supercritical trifluoromethane (CHF 3 was measured as a function of density (at pressures of 6-16 MPa) at 323.15 K. The concentration dependence of the molar conductivity was fitted using the Fuoss-Kraus equations, including ion pairs and triplets, and the molar conductivities at infinite dilution and the ion-pair formation constants were calculated as a function of the solvent density for both salts. The results were analyzed and explained by resorting to the peculiar properties of supercritical fluids in the low-density region. A comparison with the continuum model of ion mobility was conducted to demonstrate the inability of such a hydrodynamic model to describe the transport properties of salts in supercritical media. Also, the compressible continuum model applied to these systems seems to describe the limiting conductivity behavior in the high-density region rather well. 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_p3358_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 Chronocoulometry
Ohmic distortion
Carbon dioxide
Cyclic voltammetry
Diffusion
Electric conductivity
Phosphates
Probability density function
Salts
Solvents
Thermal effects
Toxicity
Organic compounds
spellingShingle Chronocoulometry
Ohmic distortion
Carbon dioxide
Cyclic voltammetry
Diffusion
Electric conductivity
Phosphates
Probability density function
Salts
Solvents
Thermal effects
Toxicity
Organic compounds
Goldfarb, D.L.
Corti, H.R.
Electrical Conductivity of Decamethylferrocenium Hexafluorophosphate and Tetrabutylammonium Hexafluorophosphate in Supercritical Trifluoromethane
topic_facet Chronocoulometry
Ohmic distortion
Carbon dioxide
Cyclic voltammetry
Diffusion
Electric conductivity
Phosphates
Probability density function
Salts
Solvents
Thermal effects
Toxicity
Organic compounds
description The electrical conductivity of tetrabutylammonium hexafluorophosphate (TBAPF 6) and decamethylferrocenium hexafluorophosphate (Fe(Cp*) 2PF 6) in supercritical trifluoromethane (CHF 3 was measured as a function of density (at pressures of 6-16 MPa) at 323.15 K. The concentration dependence of the molar conductivity was fitted using the Fuoss-Kraus equations, including ion pairs and triplets, and the molar conductivities at infinite dilution and the ion-pair formation constants were calculated as a function of the solvent density for both salts. The results were analyzed and explained by resorting to the peculiar properties of supercritical fluids in the low-density region. A comparison with the continuum model of ion mobility was conducted to demonstrate the inability of such a hydrodynamic model to describe the transport properties of salts in supercritical media. Also, the compressible continuum model applied to these systems seems to describe the limiting conductivity behavior in the high-density region rather well.
format JOUR
author Goldfarb, D.L.
Corti, H.R.
author_facet Goldfarb, D.L.
Corti, H.R.
author_sort Goldfarb, D.L.
title Electrical Conductivity of Decamethylferrocenium Hexafluorophosphate and Tetrabutylammonium Hexafluorophosphate in Supercritical Trifluoromethane
title_short Electrical Conductivity of Decamethylferrocenium Hexafluorophosphate and Tetrabutylammonium Hexafluorophosphate in Supercritical Trifluoromethane
title_full Electrical Conductivity of Decamethylferrocenium Hexafluorophosphate and Tetrabutylammonium Hexafluorophosphate in Supercritical Trifluoromethane
title_fullStr Electrical Conductivity of Decamethylferrocenium Hexafluorophosphate and Tetrabutylammonium Hexafluorophosphate in Supercritical Trifluoromethane
title_full_unstemmed Electrical Conductivity of Decamethylferrocenium Hexafluorophosphate and Tetrabutylammonium Hexafluorophosphate in Supercritical Trifluoromethane
title_sort electrical conductivity of decamethylferrocenium hexafluorophosphate and tetrabutylammonium hexafluorophosphate in supercritical trifluoromethane
url http://hdl.handle.net/20.500.12110/paper_15206106_v108_n10_p3358_Goldfarb
work_keys_str_mv AT goldfarbdl electricalconductivityofdecamethylferroceniumhexafluorophosphateandtetrabutylammoniumhexafluorophosphateinsupercriticaltrifluoromethane
AT cortihr electricalconductivityofdecamethylferroceniumhexafluorophosphateandtetrabutylammoniumhexafluorophosphateinsupercriticaltrifluoromethane
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