Coal liquefaction using deuterium-labeled anthracene oil solvent

Conference · Fri Jan 01 04:00:00 EST 1988 · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA)

OSTI ID:5289993

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 (USA)

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, A04, 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 A04 was reacted in the presence of unconverted coal (tetrahydrofuran-insoluble material from a previous autoclave liquefaction test), water, carbon monoxide, and hydrogen sulfide at 350 C and 1,000 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 tetrahydrofuran solubility, and changes observed in NMR spectra are presented.

• OSTI ID: 5289993
• Report Number(s): CONF-8806136--
• Conference Information: Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA) Journal Volume: 33:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ANTHRACENE
AROMATICS
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHROMATOGRAPHY
COAL
COAL LIQUEFACTION
COAL LIQUIDS
CONDENSED AROMATICS
DEUTERIUM
ENERGY SOURCES
EVEN-ODD NUCLEI
FLUIDS
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
HYDROCARBONS
HYDROGEN ISOTOPES
ISOTOPES
KINETICS
LABELLED COMPOUNDS
LIGHT NUCLEI
LIQUEFACTION
LIQUIDS
MAGNETIC RESONANCE
MASS SPECTROSCOPY
MATERIALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
REACTION KINETICS
RESONANCE
SAMPLE PREPARATION
SEPARATION PROCESSES
SPECTROSCOPY
STABILITY
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS
SUBBITUMINOUS COAL
THERMOCHEMICAL PROCESSES