Determination of the molecular diffusion coefficients in ternary mixtures by the sliding symmetric tubes technique

Miren Larrañaga; D Andrew S Rees; M Mounir Bou-Ali

doi:10.1063/1.4864189

Determination of the molecular diffusion coefficients in ternary mixtures by the sliding symmetric tubes technique

J Chem Phys. 2014 Feb 7;140(5):054201. doi: 10.1063/1.4864189.

Authors

Miren Larrañaga¹, D Andrew S Rees², M Mounir Bou-Ali¹

Affiliations

¹ MGEP Mondragon Goi Eskola Politeknikoa, Mechanical and Industrial Manufacturing Department, Loramendi 4 Apdo. 23, 20500 Mondragon, Spain.
² Department of Mechanical Engineering, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.

PMID: 24511933
DOI: 10.1063/1.4864189

Abstract

A new analytical methodology has been developed to determine the diagonal and cross-diagonal molecular diffusion coefficients in ternary mixtures by the Sliding Symmetric Tubes technique. The analytical solution is tested in binary mixtures obtaining good agreement with the results of the literature. Results are presented for the ternary mixture formed by tetralin, isobutylbenzene, and dodecane with an equal mass fraction for all the components (1-1-1) which is held at 25 °C. Diagonal and cross-diagonal coefficients are determined for the three possible orders of components, in order to compare the results with those available in the literature. A comparison with published results shows a good agreement for the eigenvalues of the diffusion matrix, and a reasonable agreement for the diagonal molecular diffusion coefficients.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Chemistry Techniques, Analytical / methods*
Diffusion
Solutions

Substances

Solutions