Development and validation of a new setup for measurements of diffusion coefficients in ternary mixtures using the Taylor dispersion technique

Vitaliy Sechenyh; Jean-Claude Legros; Valentina Shevtsova

doi:10.1016/j.crme.2013.02.004

Development and validation of a new setup for measurements of diffusion coefficients in ternary mixtures using the Taylor dispersion technique

Vitaliy Sechenyh ¹ ; Jean-Claude Legros ¹ ; Valentina Shevtsova ¹

¹ Université libre de Bruxelles, Physical Chemistry Department, Microgravity Research Center, CP 165/62, Avenue Franklin-Delano-Roosevelt 50, 1050 Brussels, Belgium

Comptes Rendus. Mécanique, Volume 341 (2013) no. 4-5, pp. 490-496.

Résumé

This paper summarizes our efforts to design and develop a new instrument for measuring the diffusion coefficients in binary and ternary mixtures based on Taylor dispersion technique. The main task was to build a relatively simple instrument with reasonable accuracy which can be applied to a wide range of systems. Previous studies of the diffusion in ternary liquid mixtures were focused at electrolytes and diluted solutions. The mathematical approach was also developed for such kind of systems. We adapted the existing approach for non-dilute mixtures using mass fractions instead of molar concentrations. The experimental protocol and algorithm for the diffusion coefficients extraction were validated against the literature data for the binary system water/isopropanol. We report the results of the measurements of diffusion coefficients in symmetric point (1:1:1) of ternary mixture THN/IBB/C12.

Publié le : 2013-02-19

DOI : 10.1016/j.crme.2013.02.004

Mots clés : Diffusion, Ternary mixture, Taylor dispersion

Affiliations des auteurs :

Vitaliy Sechenyh ¹ ; Jean-Claude Legros ¹ ; Valentina Shevtsova ¹

¹ Université libre de Bruxelles, Physical Chemistry Department, Microgravity Research Center, CP 165/62, Avenue Franklin-Delano-Roosevelt 50, 1050 Brussels, Belgium

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     author = {Vitaliy Sechenyh and Jean-Claude Legros and Valentina Shevtsova},
     title = {Development and validation of a new setup for measurements of diffusion coefficients in ternary mixtures using the {Taylor} dispersion technique},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {490--496},
     publisher = {Elsevier},
     volume = {341},
     number = {4-5},
     year = {2013},
     doi = {10.1016/j.crme.2013.02.004},
     language = {en},
}

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Vitaliy Sechenyh; Jean-Claude Legros; Valentina Shevtsova. Development and validation of a new setup for measurements of diffusion coefficients in ternary mixtures using the Taylor dispersion technique. Comptes Rendus. Mécanique, Volume 341 (2013) no. 4-5, pp. 490-496. doi : 10.1016/j.crme.2013.02.004. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2013.02.004/

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