Sintering of Ni/Al/sub 2/O/sub 3/ catalysts in H/sub 2//H/sub 2/O atmospheres effects on methanation activity, BET area, and nickel metal area. [Alumina-supported Ni, Ni--Ru, Ni--Rh, and NiMoO/sub 3/ catalysts]
Journal Article
·
· Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States)
OSTI ID:6769315
Thermal degradation of nickel catalysts is a problem in several high temperature catalytic processes such as steam reforming and methanation of coal synthesis gas. Thermal deactivation of supported nickel may result from (a) sintering (i.e., loss of support and metal area), and (b) phase transformations such as the formation of nickel aluminate. The present study was undertaken to obtain rates and activation energies for sintering of alumina-supported Ni, Ni-Ru, Ni-Rh, and NiMoO/sub 3/ catalysts in H/sub 2/ and H/sub 2/O/H/sub 2/ atmospheres typical of methanation conditions. The effects of sintering on methanation activity are also under investigation. This preliminary paper examines the effects of high temperatures on BET area and metal dispersion for alumina-supported nickel in H/sub 2/ and H/sub 2/O/H/sub 2/ atomspheres. The effects of calcining the support prior to catalyst preparation are also examined.
- Research Organization:
- Brigham Young Univ., Provo, UT
- OSTI ID:
- 6769315
- Journal Information:
- Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States), Journal Name: Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States) Vol. 22:4; ISSN ACPCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sintering of alumina-supported nickel and nickel bimetallic methanation catalysts in H/sub 2//H/sub 2/O atmospheres
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Journal Article
·
Fri Dec 31 23:00:00 EST 1982
· J. Catal.; (United States)
·
OSTI ID:6293846
Influence of H{sub 3}PO{sub 4} additives on interaction between NIMoO{sub 4} and support in Al-Ni-Mo catalysts of hydrogenation
Conference
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Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:215011
On the microstructure of the coprecipitated Ni-Al[sub 2]O[sub 3] catalysts
Journal Article
·
Thu Mar 31 23:00:00 EST 1994
· Journal of Catalysis; (United States)
·
OSTI ID:7198187
Related Subjects
090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKANES
ALLOYS
CALCINATION
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
DECOMPOSITION
ELEMENTS
FABRICATION
FLUIDS
HYDROCARBONS
METALS
METHANATION
METHANE
MOLYBDATES
MOLYBDENUM COMPOUNDS
NICKEL
NICKEL ALLOYS
NICKEL COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PLATINUM METAL ALLOYS
PYROLYSIS
RHODIUM ALLOYS
RUTHENIUM ALLOYS
SINTERING
TEMPERATURE EFFECTS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
10 SYNTHETIC FUELS
ALKANES
ALLOYS
CALCINATION
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
DECOMPOSITION
ELEMENTS
FABRICATION
FLUIDS
HYDROCARBONS
METALS
METHANATION
METHANE
MOLYBDATES
MOLYBDENUM COMPOUNDS
NICKEL
NICKEL ALLOYS
NICKEL COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PLATINUM METAL ALLOYS
PYROLYSIS
RHODIUM ALLOYS
RUTHENIUM ALLOYS
SINTERING
TEMPERATURE EFFECTS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS