Coal liquefaction using deuterium-labeled anthracene oil solvent

Conference · Wed Jun 01 04:00:00 EDT 1988 · Am. Chem. Soc., Div. Gas Fuel Chem., Prepr.; (United States)

OSTI ID:6507288

Aulich, T R; Knudson, C L; Hawthorne, S B ^[1]

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1. Univ. of North Dakota, Energy and Minerals Research Center, Grand Forks, ND (US)

In order to better understand the reactions of heteroatom-containing organics which occur during liquefaction of subbituminous coal, it is necessary to distinguish between coal-derived and solvent-derived species. A coal-derived liquefaction solvent, AO/sub 4/, was deuterium-labeled by a method developed at the University of North Dakota Energy and Minerals Research Center and found to be stable under liquefaction conditions. The deuterium-labeled AO4 was reacted in the presence of unconverted coal (tetraydrofuran-insoluble material from a previous autoclave liquefaction test), water, carbon monoxide, and hydrogen sulfide at 350/sup 0/C and 1000 psia for 30 minutes. No significant degradation in isotopic purity was observed in the mass spectra of the individual deuterated species comprising approximately 95 wt% of the deuterated solvent. Tests were also conducted with raw coal under similar liquefaction conditions to determine the amounts of coal-derived compounds evolved, and whether these compounds will undergo deuterium exchange with the deuterated solvent. Distillable products are being analyzed using GC/MS, and soluble and insoluble products are being analyzed using liquid proton and solid state C-13 NMR. The deuterium-labeling method has also been used to synthesize 16 model compounds including O-, S-, and N-containing aromatics to be used in future liquefaction tests. Analytical results including product component identification, coal conversion as determined by tetraydrofuran solubility, and changes observed in NMR spectra will be presented.

• OSTI ID: 6507288
• Report Number(s): CONF-8806136-
• Conference Information: Journal Name: Am. Chem. Soc., Div. Gas Fuel Chem., Prepr.; (United States) Journal Volume: 33:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ANTHRACENE
AROMATICS
CARBON 13
CARBON COMPOUNDS
CARBON ISOTOPES
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
COAL
COAL LIQUEFACTION
COAL LIQUIDS
CONDENSED AROMATICS
DEUTERIUM
ENERGY SOURCES
EVEN-ODD NUCLEI
FLUIDS
FOSSIL FUELS
FUELS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
HYDROGEN SULFIDES
ISOTOPE APPLICATIONS
ISOTOPES
KINETICS
LABELLING
LIGHT NUCLEI
LIQUEFACTION
LIQUIDS
MATERIALS
NMR SPECTRA
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
SOLUBILITY
SPECTRA
STABLE ISOTOPES
SUBBITUMINOUS COAL
SULFIDES
SULFUR COMPOUNDS
TETRAHYDROFURAN
THERMOCHEMICAL PROCESSES
TRACER TECHNIQUES