Structural and Functional Effects in Solutions With Pure and Entrainer-Doped Supercritical Solvents

The structural dependence of the solubility of nonvolatile compounds in compressed supercritical fluids has been investigated. Within pure, nonpolar supercritical solvents the predominant factor determining solubility is the volatility of the solute at the solution temperature. Of secondary importance is the effect of solute size, with larger solutes showing greater solubility enhancements, as defined by the dimensionless enhancement factor. Little influence of the solute polarity is observed. These factors are shown to make pure supercritical fluids poor separation solvents for solute mixtures of solids with similar sizes and volatilities.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Van Alsten, John Gregg

• Engineering, Chemical

Identifier

(UMI)AAI8610989

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/69767