Supercritical fluid reactions for coal processing. Quarterly progress report, October 1, 1996--December 31, 1996
Exciting opportunities exist for the application of supercritical fluid (SCF) reactions for the pre-treatment of coal. Utilizing reactants which resemble the organic nitrogen containing components of coal, we propose to develop a method to tailor chemical reactions in supercritical fluid solvents for the specific application of coal denitrogenation. The Diels - Alder reaction of anthracene and 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD) was chosen as the model system and was investigated in supercritical carbon dioxide. During this quarter, measurement of the density dependence of the kinetic rate constant for PTAD and anthracene in supercritical solvents was continued. Having completed studies of rates versus density in pure CO{sub 2} at 40C, attention was focused on CO{sub 2}/Cosolvent mixtures. Experiments were performed using binary mixtures of CO{sub 2} and either chloroform or acetone as cosolvent. Cosolvent concentrations were varied between 0.00826 mol/L and 0.0826 mol/L. The cosolvents produced no significant change in the rate constant over that of pure CO{sub 2} at these concentrations.
- Research Organization:
- Georgia Tech Research Inst., Atlanta, GA (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
- DOE Contract Number:
- FG22-94PC94206
- OSTI ID:
- 481927
- Report Number(s):
- DOE/PC/94206-T7; ON: DE97052480; TRN: 97:003681
- Resource Relation:
- Other Information: PBD: 1 Sep 1994
- Country of Publication:
- United States
- Language:
- English
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