Steam gasification of low-rank coals with a chlorine-free iron catalyst from ferric chloride
- Research Center for Carbonaceous Resources, Inst. for Chemical Reaction Science, Tohoku Univ., Sendai 980 (JP)
In this paper, a novel method for converting FeCl{sub 3} to an active, Cl-free Fe catalyst for coal gasification is studied. Fe cations alone can be incorporated into low-rank coals from an aqueous solution of FeCl{sub 3} by using NH{sub 3}/NH{sub 4}Cl solution. Some Fe cations are exchanged with the protons in carboxyl groups. The Cl-free Fe results in a finely dispersed catalyst, which shows a high activity for gasification with steam at around 950 K. The degree of rate enhancement by the Cl-free catalyst depends on char conversion, Fe loading, and temperature. The chemical form of the Fe catalyst on devolatilization and during gasification is Fe{sub 3}O{sub 4}. The catalytic activity is discussed in terms of the dispersion of Fe{sub 3}O{sub 4} particles.
- OSTI ID:
- 7081163
- Journal Information:
- Industrial and Engineering Chemistry Research; (United States), Vol. 30:8; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
CHEMICAL PREPARATION
COAL GASIFICATION
IRON
CATALYTIC EFFECTS
AMMONIA
AMMONIUM CHLORIDES
AQUEOUS SOLUTIONS
CHEMICAL REACTION KINETICS
COAL RANK
ION EXCHANGE
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
CHLORIDES
CHLORINE COMPOUNDS
DISPERSIONS
ELEMENTS
GASIFICATION
HALIDES
HALOGEN COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
KINETICS
METALS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
REACTION KINETICS
SOLUTIONS
SYNTHESIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
010404* - Coal
Lignite
& Peat- Gasification
010600 - Coal
Lignite
& Peat- Properties & Composition
400201 - Chemical & Physicochemical Properties