SOLUBILITY OF MESO-TETRAPHENYLPORPHYRIN IN TWO SUPERCRITICAL FLUID SOLVENTS.

T. R. Bergstresser, Michael E. Paulaitis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Solubilities of meso-tetraphenylporphyrin (normal melting temperature equals 444 degree C) in pentane and in toluene have been measured at elevated temperatures and pressures. Three-phase, solid-liquid-gas equilibrium temperatures and pressures were also measured for these two binary mixtures at conditions near the critical point of the supercritical-fluid solvent. The solubility of the porphyrin in supercritical toluene is three orders of magnitude greater than that in supercritical pentane or in conventional liquid solvents at ambient temperatures and pressures. An analysis of the phase diagram for toluene-porphyrin mixtures shows that supercritical toluene is the preferred solvent for this porphyrin because (1) high solubilities are obtained at moderate pressures, and (2) the porphyrin can be easily recovered from solution by small reduction in pressure.

Original languageEnglish (US)
Title of host publicationACS Symposium Series
PublisherACS
Pages138-148
Number of pages11
ISBN (Print)0841210101
StatePublished - Jan 1 1987

Publication series

NameACS Symposium Series
ISSN (Print)0097-6156

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Bergstresser, T. R., & Paulaitis, M. E. (1987). SOLUBILITY OF MESO-TETRAPHENYLPORPHYRIN IN TWO SUPERCRITICAL FLUID SOLVENTS. In ACS Symposium Series (pp. 138-148). (ACS Symposium Series). ACS.