Inorganic Materials

, Volume 55, Issue 11, pp 1172–1178 | Cite as

Modeling Iron Pentacarbonyl Ultrapurification in a Vertical Distillation Apparatus

  • V. A. Shaposhnikov
  • Yu. S. Belozerov
  • Yu. P. KirillovEmail author
  • A. D. Bulanov
  • A. M. Potapov
  • M. O. Steshin


This paper presents a mathematical model for the ultrapurification of substances via distillation in a closed vaporization–condensation system, where vapor condenses on a flowing down liquid film. We jointly analyze the mechanisms behind vaporization, vapor transport, condensation, condensate motion, and impurity diffusion in vaporizing liquid. Examining the removal of cobalt impurities from iron pentacarbonyl as an example, we assess the degree of purification as a function of vaporization and condensation temperatures, vaporization area, the fraction of liquid vaporized, and the radius and height of the condensation tube. Using experimentally determined temperature-dependent effective separation coefficients and the mathematical model, we find diffusion coefficients and equilibrium separation coefficients of cobalt, tungsten, and chromium impurities in iron pentacarbonyl.


distillation closed system condensation vertical tube flowing down liquid separation coefficient degree of purification iron pentacarbonyl cobalt impurities 



We are grateful to Academician M.F. Churbanov for useful discussions.


This work was supported by the Russian Federation Ministry of Science and Higher Education, state research target no. 0095-2019-0003.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • V. A. Shaposhnikov
    • 1
  • Yu. S. Belozerov
    • 1
  • Yu. P. Kirillov
    • 1
    Email author
  • A. D. Bulanov
    • 1
  • A. M. Potapov
    • 1
  • M. O. Steshin
    • 1
  1. 1.Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of SciencesNizhny NovgorodRussia

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