Reactivity of heteroatom-containing organics during liquefaction of subbituminous coal: Quarterly technical progress report, June 15, 1987-September 15, 1987

Technical Report · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6227182

Knudson, C L; Hawthorne, S B; Aulich, T R

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/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. Analytical results including product component identification, coal conversion as determined by tetrahydrofuran solubility, and changes observed in NMR spectra are presented. 4 refs., 7 figs., 3 tabs.

• Research Organization: North Dakota Univ., Grand Forks (USA). Energy and Mineral Research Center
• DOE Contract Number: FG22-86PC90911
• OSTI ID: 6227182
• Report Number(s): DOE/PC/90911-7; ON: DE87013638
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ANTHRACENE
AROMATICS
AZAARENES
AZINES
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
COAL LIQUEFACTION
COAL LIQUIDS
CONDENSED AROMATICS
CRESOLS
DEUTERATION
DEUTERIUM
ENERGY SOURCES
EVEN-ODD NUCLEI
FLUIDS
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN 1
HYDROGEN ISOTOPES
HYDROXY COMPOUNDS
ISOTOPES
ISOTOPIC EXCHANGE
LABELLED COMPOUNDS
LIGHT NUCLEI
LIQUEFACTION
LIQUIDS
MAGNETIC RESONANCE
MASS SPECTROSCOPY
MATERIALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SOLVENTS
PHENOLS
PYRIDINES
QUINOLINES
RESONANCE
SEPARATION PROCESSES
SOLVENTS
SPECTROSCOPY
STABILITY
STABLE ISOTOPES
SUBBITUMINOUS COAL
SYNTHESIS
THERMOCHEMICAL PROCESSES