In-situ study under direct coal liquefaction conditions of the surface interaction between iron sulfides and selected number of model compounds
The importance of iron sulfides in direct coal liquefaction has been noted by several investigators; an increase in coal conversion and quality of the products has been observed in their studies. In order to gain a better understanding of the role of iron sulfides in coal liquefaction this study investigated in-situ the interaction of FeS/sub 2/, and Fe/sub 7/S/sub 8/ with a series of model compounds. In the experiments 10% catalysts by weight were added to the model compounds. The model compounds studied were dibenzothiophene, pyrene, phenanthrene, 1,4-naphthoquinone, phenothiazine, and quinoline. The experiments were performed in nitrogen and hydrogen atmospheres. Evidence was found of interaction between the pyrrhotites and some of the model compounds. The formation of intermediate iron oxides in 1,4-naphthoquinone indicates a strong interaction between the iron on the pyrrhotite surface and oxygen. The surface composition of pyrrhotite at 450/sup 0/C was also studied in a UHV reaction chamber and the interaction with H/sub 2/, O/sub 2/ and CO was investigated using electron energy loss spectroscopy. (3 tables, 11 figures, 16 refs.)
- Research Organization:
- West Virginia Univ., Morgantown
- OSTI ID:
- 5330866
- Report Number(s):
- CONF-830814-Vol.4
- Journal Information:
- Prepr. Pap. - Am. Chem. Soc., Div. Fuel Chem.; (United States), Journal Name: Prepr. Pap. - Am. Chem. Soc., Div. Fuel Chem.; (United States) Vol. 28:5; ISSN ACFPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AROMATICS
AZAARENES
AZINES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL LIQUEFACTION
CONDENSED AROMATICS
DECOMPOSITION
ELECTRON SPECTRA
ELECTRON SPECTROSCOPY
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYPERFINE STRUCTURE
IRON COMPOUNDS
IRON SULFIDES
ISOMER SHIFT
KINETICS
LIQUEFACTION
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHENANTHRENE
PHENOTHIAZINES
POLYCYCLIC AROMATIC HYDROCARBONS
PYRENE
PYRIDINES
QUADRUPOLE MOMENTS
QUINOLINES
QUINONES
REACTION KINETICS
SPECTRA
SPECTROSCOPY
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
THIOPHENE
TRANSITION ELEMENT COMPOUNDS