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Abstract:

A high-temperature wall-tube electrode cell (WTE) for electrochemical studies in hydrothermal systems is described. The cell contains a jet impinging on a wall (electrode) where the hydrodynamics in the stagnation region is well defined and the WTE has uniform accessibility and is equivalent to a rotating disc electrode (RDE). The construction and testing of the high-temperature WTE is described and its performance tested using different redox couples such as hexacyanoferrate(II/III) and quinone/hydroquinone. Diffusion coefficients of iron(II)/iron(III) are reported at temperatures up to 142 °C in sulfate solutions and are analysed taking into account the speciation in the solution. The application of the Stokes-Einstein equation to describe the temperature dependence of the diffusion coefficients in systems with strong ionic association is discussed for iron(II)/iron(III) and other species.

Registro:

Documento: Artículo
Título:High-temperature wall-tube cell- Design, characterization and results of mass transport phenomena
Autor:Trevani, L.N.; Calvo, E.; Corti, H.R.
Filiación:Instituto de Química Física de los Materiales, Medio Ambiente y Energía, Facultad de Ciencias Exactas y Naturales, Pabellón II, 1428 Buenos Aires, Argentina
Unidad de Actividad Química, Comisión Nacional de Energía Atómica, Av. Libertador 8250, 1429 Buenos Aires, Argentina
Argentine Science Research Council (CONICET), Argentina
Año:1997
Volumen:93
Número:24
Página de inicio:4319
Página de fin:4326
DOI: http://dx.doi.org/10.1039/a703984k
Título revista:Journal of the Chemical Society - Faraday Transactions
ISSN:09565000
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09565000_v93_n24_p4319_Trevani

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Citas:

---------- APA ----------
Trevani, L.N., Calvo, E. & Corti, H.R. (1997) . High-temperature wall-tube cell- Design, characterization and results of mass transport phenomena. Journal of the Chemical Society - Faraday Transactions, 93(24), 4319-4326.
http://dx.doi.org/10.1039/a703984k
---------- CHICAGO ----------
Trevani, L.N., Calvo, E., Corti, H.R. "High-temperature wall-tube cell- Design, characterization and results of mass transport phenomena" . Journal of the Chemical Society - Faraday Transactions 93, no. 24 (1997) : 4319-4326.
http://dx.doi.org/10.1039/a703984k
---------- MLA ----------
Trevani, L.N., Calvo, E., Corti, H.R. "High-temperature wall-tube cell- Design, characterization and results of mass transport phenomena" . Journal of the Chemical Society - Faraday Transactions, vol. 93, no. 24, 1997, pp. 4319-4326.
http://dx.doi.org/10.1039/a703984k
---------- VANCOUVER ----------
Trevani, L.N., Calvo, E., Corti, H.R. High-temperature wall-tube cell- Design, characterization and results of mass transport phenomena. 1997;93(24):4319-4326.
http://dx.doi.org/10.1039/a703984k