Mechanisms of alkali metal catalysis in the gasification of coal, char, or graphite. [64 references]
The most plausible mechanisms of the alkali metal catalysis in the gasification of coal, char or graphite are presented in this review. The paper includes: some important observations on the catalytic effect of alkali metal compounds on the char-steam and graphite-steam reactions; effect of alkali metal carbonates on the graphite-CO/sub 2/ reaction; alkali metal-graphite intercalates and alkali metal-amorphous carbon compounds; catalytic effect of the alkali metal complexes on carbon compounds; catalytic effect of the electron donor-acceptor complexes formed by alkali metal and aromatic hydrocarbons; mechanisms of alkali metal catalysis in the gasification of char and graphite; coal gasification vis-a-vis char and graphite gasification; a conclusion; and a list of 45 references. Coal gasification can be carried out under the atmospheres of various gases such as inert gases, hydrogen, carbon monoxide, carbon dioxide, steam, and any combination of these gases. These are covered under gasification of char and graphite. Oxygen gas is not included because it leads to combustion of coal which is, very important, but is outside the scope of this review. 7 figures.
- Research Organization:
- Clark Univ., Worcester, MA
- OSTI ID:
- 5039414
- Journal Information:
- Catal. Rev. - Sci. Eng.; (United States), Vol. 22:1
- Country of Publication:
- United States
- Language:
- English
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ALKALI METAL COMPLEXES
CATALYTIC EFFECTS
ALKALI METAL COMPOUNDS
CHARS
GASIFICATION
COAL GASIFICATION
CATALYSIS
GRAPHITE
AROMATICS
CARBON DIOXIDE
CARBON MONOXIDE
CARBONATES
CLATHRATES
RARE GASES
STEAM
CARBON
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COMPLEXES
ELEMENTS
FLUIDS
GASES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS PRODUCTS
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification