The European Physical Journal E

, 39:111

Development of a high-pressure set-up for measurements of binary diffusion coefficients in supercritical carbon dioxide

  • S. Ancherbak
  • C. Santos
  • J. -C. Legros
  • A. Mialdun
  • V. Shevtsova
Regular Article

DOI: 10.1140/epje/i2016-16111-9

Cite this article as:
Ancherbak, S., Santos, C., Legros, J.C. et al. Eur. Phys. J. E (2016) 39: 111. doi:10.1140/epje/i2016-16111-9
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Part of the following topical collections:
  1. Non-isothermal transport in complex fluids

Abstract.

We present the development of a high-pressure apparatus for measurements of diffusion coefficients in supercritical fluids. The Taylor dispersion method has been adapted to conduct experiments at the pressures up to 25.0 MPa. In order to test the developed set-up, binary diffusion coefficients D at infinite dilution in supercritical carbon dioxide have been measured for a reference system, benzene, at temperatures in the range of 309.50-319.95 K. The effects of flow velocity, number of consecutive injections and absorbance at different wave numbers on the diffusion coefficient have been analysed. The obtained diffusion coefficients are of the order of 10-8m2/s and in excellent agreement with the available literature data.

Graphical abstract

Keywords

Topical Issue: Non-isothermal transport in complex fluids 

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • S. Ancherbak
    • 1
  • C. Santos
    • 2
  • J. -C. Legros
    • 1
    • 3
  • A. Mialdun
    • 1
  • V. Shevtsova
    • 1
  1. 1.MRC, CP165/62, Université Libre de Bruxelles (ULB)BrusselsBelgium
  2. 2.Department of ChemistryUniversity of CoimbraCoimbraPortugal
  3. 3.Institute of Power EngineeringNational Research Tomsk Polytechnic UniversityTomskRussia

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