Determination of the solubility of solid CCl₄ in supercritical CF₄ at subambient temperature

Author

Thomas Allan Barber

Date of Award

5-1990

Degree Type

Thesis

Degree Name

Master of Science

Major

Chemical Engineering

Major Professor

Paul R. Bienkowski, Hank D. Cochran

Committee Members

Charlie Byers

Abstract

A dynamic experimental apparatus developed for supercritical fluid studies was used to determine the solubility of solid CCl₄ in supercritical CF₄. An on-line quadrupole mass spectrometer was utilized for analysis of the effluent. The direct coupling of supercritical extraction with mass spectrometry offers a quantitative method for the direct determination of the solute mole fraction in the supercritical fluid. Valid data were obtained for two isotherms at 244K and 249K. Solubilities were found to range from 5.1x10^-4 to 2.58x10^-2 mole fraction. These data will broaden the data base to support the testing of new theoretical models for predicting supercritical behavior. This study successfully correlated the data by two different computational approaches: the compressed gas model and the Kirkwood-Buff fluctuation integral model. As the critical point for CF₄ is 227.6 K, these data are among the few supercritical solubility data available at subambient temperature.

Recommended Citation

Barber, Thomas Allan, "Determination of the solubility of solid CCl₄ in supercritical CF₄ at subambient temperature. " Master's Thesis, University of Tennessee, 1990.
https://trace.tennessee.edu/utk_gradthes/12598