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Supercritical thermodynamics of sulfur and nitrogen species. Quarterly progress report, January 1, 1992--March 31, 1992

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Significant opportunity exists for the application of supercritical fluid (SCF) technology to coal processing, both for pretreatment of high sulfur coals, as well as liquefaction and treatment of coal liquids. Supercritical fluids are attractive solvents for a variety of coal processing applications because of their unusual solvating and mass transfer properties. Solubility studies have been carried out for a number of model coal and coal-liquid compounds, primarily in pure supercritical fluids. We are extending this database of model coal compound equilibria using modern techniques that have the advantage of being much more rapid than traditional techniques. Cosolvent effects on solubility … continued below

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20 p.

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Eckert, C. A. October 1, 1991.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 13 times. More information about this report can be viewed below.

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Significant opportunity exists for the application of supercritical fluid (SCF) technology to coal processing, both for pretreatment of high sulfur coals, as well as liquefaction and treatment of coal liquids. Supercritical fluids are attractive solvents for a variety of coal processing applications because of their unusual solvating and mass transfer properties. Solubility studies have been carried out for a number of model coal and coal-liquid compounds, primarily in pure supercritical fluids. We are extending this database of model coal compound equilibria using modern techniques that have the advantage of being much more rapid than traditional techniques. Cosolvent effects on solubility are being investigated over a variety of solvent properties. In addition, specific molecular interactions are being investigated through spectroscopic techniques. The resulting data are being used to develop a chemical-physical equation of state (EOS) model of SCF solution with meaningful parameters. The equation of state will be used to predict solubility behavior, which will permit the design and tailoring of SCF cosolvent systems for specific coal processing applications.

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20 p.

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OSTI; NTIS; GPO Dep.

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Office of Scientific & Technical Information Technical Reports

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  • October 1, 1991

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  • Nov. 3, 2018, 11:47 a.m.

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  • July 24, 2025, 8:28 p.m.

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Thumbnail image of item number 1 in: 'Supercritical thermodynamics of sulfur and nitrogen species. Quarterly progress report, January 1, 1992--March 31, 1992'.
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Eckert, C. A. Supercritical thermodynamics of sulfur and nitrogen species. Quarterly progress report, January 1, 1992--March 31, 1992, report, October 1, 1991; Atlanta, Georgia. (https://digital.library.unt.edu/ark:/67531/metadc1317790/: accessed May 15, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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