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U.S. Department of Energy
Office of Scientific and Technical Information

Thermodynamic properties for supercritical coal conversion: Quarterly progress report, 1/1/87-3/31/87. [Thioxanthone; xanthone; bibenzothiophene]

Technical Report ·
OSTI ID:7053103
Supercritical fluids (SCF's) are the medium for an exciting new separation technology which has the potential to provide a way to selectively remove the desirable or undesirable components from coal. Our objective is to investigate the thermodynamic properties of supercritical fluids pertinent to the extraction and/or reaction of coal. Specifically, we are measuring the solubilities of representative coal compounds in a variety of supercritical fluids. During this quarter, we measured the solubility of anthracene, thioxanthone, and xanthone in SC butane at 157, 162, and 182/sup 0/C. In order to expand the current solubility database of low temperature solvent studies, measurements were made with carbon dioxide at temperatures of 35, 50, and 70/sup 0/C and at pressures in the range of 100 to 420 bars. The solutes that were investigated include dibenzofuran, dibenzothiophene, and thianthrene. Results indicate higher solubilities can be obtained using SC butane. This solvent is likely to be better suited to coal processing applications.
Research Organization:
Illinois Univ., Urbana (USA). Dept. of Chemical Engineering
DOE Contract Number:
FG22-84PC70801
OSTI ID:
7053103
Report Number(s):
DOE/PC/70801-T10; ON: DE87008186
Country of Publication:
United States
Language:
English