Homogeneous catalytic hydrocracking processes for conversion of coal to liquid fuels: basic and exploratory research. Quarterly report, March 16, 1978--June 15, 1978
Work has begun on the investigation of the CO/H/sub 2/O/base system for upgrading Illinois No. 6 coal. Reactions of coal in CO/H/sub 2/O/KOH at 400/sup 0/C for 20 minutes provide products that appear favorable compared with SRC. The results of a blank CO/H/sub 2/O/KOH run demonstrate the presence of formate in our system, and the production of hydrogen, which is catalytic with respect to base. Model compound results from i-PrOH/KOH, MeOH/KOH, and CO/H/sub 2/O/KOH systems indicate that anthracene-like structures in coal would be hydrogenated in these systems, but phenanthrene-like structures would not. Furthermore, phenyl ether-like bridges would be cleaved, while bibenzyl- and biphenyl-like bridges would not. The fact that coal is converted in these basic systems, while bibenzyl and benzyl-phenyl ether are not, raises some important questions about the mechanism of coal conversion. On tasks to study the role of intermediate and acid-base complexes in hydrogen donor liquefaction processes, we have begun the attempt to reconcile differences between findings in the present work and those of Whitehurst and coworkers. Possible causes of the difference between Whitehurst's results and the present findings are traced to differences between his experimental procedures and those used in the present work. Future experiments will be directed toward further elucidation of the detrimental effect of pyridine and toward a corollary understanding of conditions that will improve donor solvent conversion.
- Research Organization:
- SRI International, Menlo Park, CA (United States)
- DOE Contract Number:
- EX-76-C-01-2202
- OSTI ID:
- 6573475
- Report Number(s):
- FE-2202-33
- Country of Publication:
- United States
- Language:
- English
Similar Records
Homogeneous catalytic hydrocracking processes for conversion of coal to liquid fuels: basic and exploratory research. Quarterly report, September 16, 1978--December 15, 1978
Homogeneous catalytic hydrocracking processes for conversion of coal to liquid fuels: basic and exploratory research. Quarterly report No. 5, November 1, 1976--January 31, 1977. [16 refs]
Related Subjects
COAL
CHEMICAL REACTIONS
HYDROGENATION
CARBON MONOXIDE
COAL LIQUEFACTION
HYDROGEN TRANSFER
POTASSIUM HYDROXIDES
STRUCTURAL MODELS
TETRALIN
WATER
ALKALI METAL COMPOUNDS
AROMATICS
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXIDES
LIQUEFACTION
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
010403 - Coal & Coal Products- Hydrogenation- (-1987)