Relative activity of transition metal catalysts in coal liquefaction
The catalytic activity of transition metals for coal liquefaction was studied and compared. Impregnation of coal with transition metals significantly increased the production of oils and the conversion of asphaltenes and preasphaltenes in coal liquefaction. Overall conversion of coal increased marginally with transition metals. The production of hydrocarbon gases decreased slightly with metals. Iron impregnation was more active in preasphaltenes conversion than cobalt, nickel, and molybdenum; whereas the other metals were more active in asphaltenes conversion than iron. Hydrogen consumption decreased with the use of metals. The quality of generated solvent decreased with iron, whereas it increased with other metals. Significant synergism was observed between iron and molybdenum. Simultaneous impregnation of coal with iron and molybdenum significantly increased the conversion of coal, asphaltenes, and preasphaltenes, and the production of oils compared to individual metals. The mixture of iron and molybdenum also decreased the hydrocarbon gas production over iron and molybdenum alone. In addition, the quality of generated solvent was higher with iron and molybdenum mixture compared to iron alone.
- Research Organization:
- Corporate Research and Development Department, Air Products and Chemicals, Inc. Allentown, PA
- OSTI ID:
- 6877807
- Report Number(s):
- CONF-830814-
- 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
ASPHALTENES
ASPHALTS
BITUMENS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION YIELD
COAL LIQUEFACTION
COBALT
COMPARATIVE EVALUATIONS
CONSUMPTION RATES
ELEMENTS
HYDROGEN
HYDROGEN TRANSFER
IRON
LIQUEFACTION
METALS
MOLYBDENUM
NICKEL
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
OTHER ORGANIC COMPOUNDS
SOLVENT PROPERTIES
SOLVENTS
SYNERGISM
TAR
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
YIELDS