In-situ study under direct coal liquefaction conditions of the surface interaction between iron sulfides and selected number of model compounds

Conference · Sat Jan 01 04:00:00 EST 1983 · Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)

OSTI ID:6655304

Montano, P A; Bommannavar, A S; Lee, Y C

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, we have investigated ''in-situ'' the interaction of FeS/sub 2/ and Fe/sub 7/S/sub 8/ with a series of model compounds. In our experiments 10% catalyst 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. The authors find evidence 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.

• Research Organization: Department of Physics, West Virginia University, Morgantown, West Virginia
• OSTI ID: 6655304
• Report Number(s): CONF-830814-
• Conference Information: Journal Name: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States) Journal Volume: 28:5
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AROMATICS
AZAARENES
AZINES
CATALYSTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL LIQUEFACTION
CONDENSED AROMATICS
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROCARBONS
IRON COMPOUNDS
IRON OXIDES
IRON SULFIDES
LIQUEFACTION
MINERALS
NAPHTHALENE
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHENANTHRENE
POLYCYCLIC AROMATIC HYDROCARBONS
PYRENE
PYRIDINES
PYRRHOTITE
QUINOLINES
QUINONES
STRUCTURAL MODELS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
THIONAPHTHENES
TRANSITION ELEMENT COMPOUNDS