1. A method for measurement of solid solubility in supercritical carbon dioxide
- Author
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Wang Renan, Yang Guanghua, and Zhao Suo-qi
- Subjects
Supercritical water oxidation ,Supercritical carbon dioxide ,Chemistry ,General Chemical Engineering ,Extraction (chemistry) ,Supercritical fluid extraction ,Analytical chemistry ,Supercritical fluid chromatography ,Binary system ,Physical and Theoretical Chemistry ,Solubility ,Condensed Matter Physics ,Supercritical fluid - Abstract
A new experimental method has been developed for measuring the equilibrium solubility of heavy solutes in supercritical CO 2 . The micro-SFE (supercritical-fluid extraction) is coupled to supercritical-fluid chromatography (SFC), both operating under the same temperature, pressure, and CO 2 flowrate. Naphthalene, biphenyl, and phenanthrene are chosen to verify the method. The isobaric solubilities of the solutes in the temperature range of 308–338 K and pressure from 8. 0 MPa to 12. 0 MPa are determined. The experimental data are in agreement with literature values and exhibit some characteristics of solid-supercritical-fluid binary system phase equilibrium in the near critical region of solvent.
- Published
- 1995
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