Coal transformation chemistry. Tenth quarterly progress report
The effort on donor solvent coal chemistry was centered on the role of pericyclic reactions in the liquefaction process. The product distribution in the thermal decomposition of 1,1,3,3-tetradeutero-1,3-diphenyl-propane has been examined at 400/sup 0/C in tetralin. The results indicate that free radical processes occur preferentially and that pericyclic reactions are unimportant under these reaction conditions. The nature of alkyl ethers formed in the reductive alkylation of coal has continued to be investigated. Through means of selective demethylation of aryl methyl ethers in the tetrahydrofuran soluble /sup 13/C-enriched reductively methylated coal, it has been determined that about 90% of the signal intensity observed in the most downfield ether region is due to hinder aryl ethers. The results also suggest that dimethoxy aryl ethers are present in the reaction product in surprisingly large amounts. The influences of coal macerals on the rate of exchange of hydrogen between tetralin and diphenylmethane has been investigated. While all the macerals enhanced the rate of the hydrogen transfer reactions, the exinites seemed to be somewhat more reactive. However, an inertinite sample which contained a relatively large quantity of organic sulfur compounds also enhanced the exchange rate significantly.
- Research Organization:
- Chicago Univ., IL (USA)
- DOE Contract Number:
- AC22-80PC30088
- OSTI ID:
- 6688067
- Report Number(s):
- DOE/PC/30088-10; ON: DE83003377
- Country of Publication:
- United States
- Language:
- English
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010405* -- Coal
Lignite
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400303 -- Organic Chemistry-- Isotope Exchange & Isotope Separation-- (-1987)
ALKYLATION
AMMONIA
AROMATICS
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
COAL
COAL LIQUEFACTION
DATA
DECOMPOSITION
DEUTERIUM
ENERGY SOURCES
ETHERS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
HYDROGEN TRANSFER
INFORMATION
INFRARED SPECTRA
ISOTOPE APPLICATIONS
ISOTOPES
ISOTOPIC EXCHANGE
LIGHT NUCLEI
LIQUEFACTION
MACERALS
MAGNETIC RESONANCE
MATERIALS
METHYLATION
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PYROLYSIS
RADICALS
REDUCTION
RESONANCE
SPECTRA
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS
TETRALIN
THERMOCHEMICAL PROCESSES
TRACER TECHNIQUES