Use of Supercritical Fluid Chromatography for Obtaining Mass Transfer Coefficients in Fluid-Solid Systems at Supercritical Conditions

Chang-Ha Lee, Gerald D. Holder

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Chromatographic experiments have been carried out with toluene and naphthalene in carbon dioxide to determine mass transfer coefficients in silica gel packed beds at 301–318 K, 54–150 atm, and 0.3 < Re < 7. Mass transfer coefficients are determined by direct matching of the chromatographic response curvss in the time domain. The molecular diffusivities for toluene in CO2 are obtained from the Renkin equation and are reasonable. A generalized mass transfer correlation which considers both the effects of natural and forced convection and the effect of axial dispersion is developed at 0.3 < Re < 135 by using the experimental data and other literature data.

Original languageEnglish
Pages (from-to)906-914
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Volume34
Issue number3
DOIs
Publication statusPublished - 1995 Mar 1

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Mass transfer
Toluene
Fluids
Silica Gel
Forced convection
Silica gel
Packed beds
Naphthalene
Natural convection
Carbon Dioxide
Carbon dioxide
Supercritical Fluid Chromatography
Experiments
naphthalene

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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AB - Chromatographic experiments have been carried out with toluene and naphthalene in carbon dioxide to determine mass transfer coefficients in silica gel packed beds at 301–318 K, 54–150 atm, and 0.3 < Re < 7. Mass transfer coefficients are determined by direct matching of the chromatographic response curvss in the time domain. The molecular diffusivities for toluene in CO2 are obtained from the Renkin equation and are reasonable. A generalized mass transfer correlation which considers both the effects of natural and forced convection and the effect of axial dispersion is developed at 0.3 < Re < 135 by using the experimental data and other literature data.

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