Thermally stable nickel-alumina catalysts useful for methanation

Patent · Tue Dec 20 04:00:00 EST 1977

OSTI ID:6860127

McArthur, D P

A new precipitation-occlusion catalyst-preparation method produces a methanation catalyst with a high degree of thermal stability. Resulting in an intimate composite of about 30-95 wt % alumina and 5-70 wt % nickel oxide, preparation involves digesting a slurry of an alumina hydrate in an aqueous solution of an amino complex of a nickel salt at a temperature sufficiently high to decompose the amino complex and release the nickel (II) ions. A gradual precipitation of nickel hydroxide then occurs in the pores and interstices formed by the agglomerating particles of alumina hydrate. The coflocculated solids are recovered, as by filtration, washed, dried, and calcined. The resulting compositions retain their activity in high-temperature reactions such as methanation for much longer periods of time than do conventional nickel-alumina catalysts prepared by coprecipitation.

• Assignee: EDB-84-115904
• Patent Number(s): US 4064152
• OSTI ID: 6860127
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HYDROCARBONS
METALS
METHANATION
METHANE
NICKEL
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRODUCTION
STABILITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS