Coal liquefaction with encapsulated catalyst
The liquefaction of a bituminous coal has been studied in the presence of ammonium heptamolybdate catalyst added in the form of microcapsules. These were prepared by in situ encapsulation of an emulsion of the molybdenum salt in tetralin. The average diameter of the polymeric microcapsules (resulting from reaction between a diisocyanate and a polyfunctional amine) was about 6 ..mu..m. Autoclave testing of the catalytic effect on liquefaction showed, both for coal conversion and hydrogen consumption, that at 450/sup 0/C the microencapsulated catalyst is at least as good as ammonium heptamolybdate pre-impregnated on the coal from aqueous solution, and far better than powdered ammonium heptamolybdate. Microencapsulated catalysts of this kind appear to offer some advantages of convenience in use, stability in storage, and flexibility.
- Research Organization:
- Department of Chemical Engineering, State University of New York at Buffalo, Buffalo, New York
- OSTI ID:
- 6877910
- Journal Information:
- Ind. Eng. Chem. Process Des. Dev.; (United States), Vol. 2:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CATALYSTS
CHEMICAL PREPARATION
COMPARATIVE EVALUATIONS
ENCAPSULATION
COAL LIQUEFACTION
MOLYBDENUM COMPOUNDS
CATALYTIC EFFECTS
AMMONIUM COMPOUNDS
AUTOCLAVES
BITUMINOUS COAL
HIGH TEMPERATURE
POLYMERS
TETRALIN
AROMATICS
BLACK COAL
CARBONACEOUS MATERIALS
COAL
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
LIQUEFACTION
MATERIALS
ORGANIC COMPOUNDS
SYNTHESIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction