Thermodynamic properties for supercritical coal conversion. Quarterly progress report, July 1-September 30, 1985. [Thioxanthone, xanthone, phenazine]

Technical Report · Tue Oct 01 04:00:00 EDT 1985

OSTI ID:5208531

Eckert, C A

We have measured the concentration effect of the entrainer in doped-solvent systems. The addition of a small amount of a polar entrainer can greatly enhance the supercritical solubility. The selectivity, sometimes poor in a pure solvent, greatly increases with the addition of the dopant. A system to dope small amounts of the entrainer in the fluid and an analytical technique to analyze the results have been developed. Measurements have been made on the effect of concentration of either methanol or acetone in carbon dioxide on the solubility of acridine in the mixed supercritical solvent. For higher temperature studies, work has continued in measuring the solubility of coal-type compounds in supercritical butane. We have measured the solubility of thioxanthone, xanthone, and phenazine at 162 and 182/sup 0/C. The solubilities are relatively high. We are currently measuring the vapor pressure of these compounds so that the solubility behavior can be fully represented. We have used a decorated lattice-gas to model binary supercritical solutions. By fitting lattice parameters that characterize molecular structure, we have related the lattice dynamics to the actual binary fluid dynamics. Work has continued in analyzing the kinetic solvent effect of supercritical propane on the dimerization of cyclopentadiene. It appears that the reaction rate constant is slightly decreased through the supercritical region. The solvent effect is small and appears to be quite dependent upon the operating conditions and the nature of the reaction.

• Research Organization: Illinois Univ., Urbana (USA). Dept. of Chemical Engineering
• DOE Contract Number: FG22-84PC70801
• OSTI ID: 5208531
• Report Number(s): DOE/PC/70801-2; ON: DE86000553
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010407* -- Coal & Coal Products-- Solvent Extraction-- (-1987)
ACETONE
ACRIDINES
ALCOHOLS
ALKANES
ALKENES
AROMATICS
AZAARENES
AZINES
BUTANE
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
CYCLOALKENES
CYCLOPENTADIENE
DIENES
DIMERIZATION
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HETEROCYCLIC OXYGEN COMPOUNDS
HIGH TEMPERATURE
HYDROCARBONS
HYDROXY COMPOUNDS
KETONES
LIQUEFACTION
MATERIALS
METHANOL
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYCYCLIC SULFUR HETEROCYCLES
POLYENES
POLYMERIZATION
PROPANE
PYRIDINES
RESEARCH PROGRAMS
SEPARATION PROCESSES
SOLUBILITY
SOLVENT PROPERTIES
STRUCTURAL MODELS
SUPERCRITICAL GAS EXTRACTION
THERMOCHEMICAL PROCESSES