Determination of diffusion coefficients for supercritical fluids

Journal of Chromatography. a
Ignacio Medina

Abstract

A review of the diffusion coefficients for solutes in supercritical fluids as reported in the literature is presented together with the correlation methods applied by the authors for modeling the experimentally determined data. Supercritical carbon dioxide has been the preferred solvent in most of the systems investigated, although other solvents at elevated pressure have also been used. The influence of pressure, temperature, density, and viscosity on the binary diffusion coefficients is discussed, and some general trends have been established. A number of experimental methods for determining diffusion coefficients in supercritical fluids have been reported in the literature. The methods are described, their advantages and disadvantages are discussed and some examples of their application are given. Predictive equations based on the Stokes-Einstein model, the Rough-Hard-Sphere theory, and other methods for the calculation of diffusion coefficients in supercritical fluids at infinite dilution are reviewed. The review also looks at the ternary systems reported in the literature. The latter are discussed in terms of temperature, pressure, the type of modifier employed, amount of modifier, and solute-modifier interactions. Several...Continue Reading

References

Jun 25, 2004·Journal of Chromatography. a·Toshitaka FunazukuriSeiichiro Kagei
Jan 29, 2011·Journal of Chromatography. a·Georges Guiochon, Abhijit Tarafder
Mar 4, 2011·The Journal of Physical Chemistry. B·Andriy Plugatyr, Igor M Svishchev

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Citations

Feb 28, 2016·Journal of Magnetic Resonance·Jan van BentumArno Kentgens
Feb 2, 2013·Journal of Chromatography. a·Chang Yi KongToshitaka Funazukuri
Jan 25, 2020·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Jeremy V SuhardiEbru Oral
Jun 13, 2019·Scientific Reports·Gabriela Guevara-CarrionValentina Shevtsova
Aug 23, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Łukasz WoźniakSylwia Skąpska
Oct 2, 2019·International Journal of Environmental Research and Public Health·Fangting WangKe Bao
May 10, 2020·The Journal of Chemical Physics·Brett Scheiner, Scott D Baalrud
Jan 25, 2019·Gels·İbrahim ŞahinCan Erkey
Feb 19, 2021·Journal of Controlled Release : Official Journal of the Controlled Release Society·Carlos A García-GonzálezCarmen Alvarez-Lorenzo
Aug 1, 2021·Nature Communications·Seungtaek LeeGunsu Yun

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