Steam gasification of carbonaceous solids catalyzed by a mixture of potassium and nickel oxides below 1000/sup 0/K
Conference
·
OSTI ID:5479775
We have recently reported that several mixtures of a transition metal oxide with potassium hydroxide are excellent catalysts for the gasification of graphite with steam. (J. Carrazza, W.T. Heinemann and G.A. Somorjai, J. Catal. 96, 234). These catalysts are active at temperatures much lower than the alkaline and alkaline-earth salts and they deactivate more slowly than nickel and iron. In this previous publication it was shown that there is a synergistic effect between the transition metal and potassium. This paper summarizes recent results in the study of this type of catalyst. We have focused on the use of mixtures of potassium hydroxide and nickel oxide, since they showed the highest activity of all the systems previously studied. A kinetic study of the gasification of several chars and the dependence of the ratio of potassium to nickel on the rate of graphite gasification are presented. Also the interaction between nickel and potassium is studied using X-ray Photoelectron Spectroscopy (DPS). 12 refs., 4 figs., 1 tab.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5479775
- Report Number(s):
- LBL-21410; CONF-860911-9; ON: DE86011560
- Country of Publication:
- United States
- Language:
- English
Similar Records
Steam gasification of carbonaceous solids catalyzed by a mixture of potassium and nickel oxides below 1000 K
Steam gasification of carbon solids catalyzed by a nickel-potassium mixed oxide: Kinetic and surface characterization studies
Steam gasification of carbon solids catalyzed by a nickel-potassium mixed oxide: Kinetic and surface characterization studies
Conference
·
Tue Dec 31 23:00:00 EST 1985
· Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)
·
OSTI ID:6831018
Steam gasification of carbon solids catalyzed by a nickel-potassium mixed oxide: Kinetic and surface characterization studies
Thesis/Dissertation
·
Wed Dec 31 23:00:00 EST 1986
·
OSTI ID:5004553
Steam gasification of carbon solids catalyzed by a nickel-potassium mixed oxide: Kinetic and surface characterization studies
Technical Report
·
Thu Oct 01 00:00:00 EDT 1987
·
OSTI ID:5823632
Related Subjects
01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ALKALI METAL COMPOUNDS
CARBON
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHARS
CHEMICAL COMPOSITION
COAL GASIFICATION
DATA
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTAL MINERALS
ELEMENTS
EXPERIMENTAL DATA
GASIFICATION
GRAPHITE
HIGH TEMPERATURE
INFORMATION
IONIZING RADIATIONS
KINETICS
MINERALS
MIXTURES
NICKEL COMPOUNDS
NICKEL OXIDES
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
PYROLYSIS PRODUCTS
RADIATIONS
REACTION KINETICS
SPECTROSCOPY
STEAM
SYNERGISM
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
X RADIATION
YIELDS
010404* -- Coal
Lignite
& Peat-- Gasification
ALKALI METAL COMPOUNDS
CARBON
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHARS
CHEMICAL COMPOSITION
COAL GASIFICATION
DATA
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTAL MINERALS
ELEMENTS
EXPERIMENTAL DATA
GASIFICATION
GRAPHITE
HIGH TEMPERATURE
INFORMATION
IONIZING RADIATIONS
KINETICS
MINERALS
MIXTURES
NICKEL COMPOUNDS
NICKEL OXIDES
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
PYROLYSIS PRODUCTS
RADIATIONS
REACTION KINETICS
SPECTROSCOPY
STEAM
SYNERGISM
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
X RADIATION
YIELDS