Exploratory study of coal conversion chemistry. Quarterly report No. 9, May 19, 1983-August 18, 1983
Work has begun on computer modeling of hydrogenolysis systems, incorporating the hydrogen transfer reactions we have invoked to explain the liquefaction effectiveness of pyrene. Additional coal conversion experiments have also been performed in a not yet successful attempt to clearly define the conversion conditions under which the differences between pyrene and the other solvents are maximized. We are also conducting a series of experiments designed to relate conversion in pure model compound systems to conversion in real coal systems and to further characterize certain coals for their radical-initilating and hydrogen transfer properties as compared with pure donor solvent systems. These latter experiments involve spiking coal liquefaction mixtures with model compounds under conditions where conversion of the model compounds can readily be determined. Our efforts in Conversion in CO/H/sub 2/O Systems were concentrated on analysis of the conversion products of an Illinois No. 6 coal, PSOC-1098, in CO/D/sub 2/O were analyzed for their deuterium content; the results reveal substantial levels of deuterium incorporation, even in the absence of conversion. Hence, supercritical water exchanges rapidly and extensively with coal at 400/sup 0/C. The behavior of benzaldehyde in CO/H/sub 2/O and CO/D/sub 2/O was also examined. The reduction of benzaldehyde to benzyl alcohol follows the water-gas shift reaction and exhibits an inverse isotope effect. This behavior is similar to the conversion behavior of the Illinois No. 6 coal in CO/H/sub 2/O. Evidence is also presented that supports the view that formate, the intermediate in the water-gas shift reaction, is responsible for conversion of the Illinois No. 6 coal.
- Research Organization:
- SRI International, Menlo Park, CA (USA)
- DOE Contract Number:
- AC22-81PC40785
- OSTI ID:
- 5633547
- Report Number(s):
- DOE/PC/40785-9; ON: DE84003112
- Country of Publication:
- United States
- Language:
- English
Similar Records
Exploratory study of coal-conversion chemistry. Quarterly report No. 8, February 19, 1983-May 18, 1983
Exploratory study of coal conversion chemistry. Quarterly report No. 10, August 19-November 18, 1983
Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
AROMATICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CARBOXYLIC ACID SALTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
COAL
COAL LIQUEFACTION
CONDENSED AROMATICS
DEUTERIUM
ENERGY SOURCES
FORMATES
FOSSIL FUELS
FUELS
HEAVY WATER
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
HYDROGEN TRANSFER
HYDROGENATION
ISOTOPES
LABELLED COMPOUNDS
LIGHT NUCLEI
LIQUEFACTION
MATERIALS
MATHEMATICAL MODELS
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
OXIDES
OXYGEN COMPOUNDS
PYRENE
RADICALS
REACTION INTERMEDIATES
SHIFT PROCESSES
SOLVENTS
STABLE ISOTOPES
STRUCTURAL MODELS
THERMOCHEMICAL PROCESSES
WATER