Cyclic two step process for production of methane from carbon monoxide

Patent · Tue Dec 30 04:00:00 EST 1980

OSTI ID:6794320

Elek, L F; Francis, J N; Rabo, J A

Carbon monoxide-containing gas streams are passed over a catalyst capable of catalyzing the disproportionation of carbon monoxide so as to deposit a surface layer of active surface carbon on the catalyst essentially without formation of inactive coke thereon. The surface layer is contacted with steam and is thus converted to methane and co2, from which a relatively pure methane product may be obtained. Dilute carbon monoxidecontaining streams, as from underground coal gasification with air or the effluent from blast furnace operations, can be used without pretreatment to convert the carbon monoxide and/or to separate inert gases therefrom. Conversion of the active surface carbon with high pressure steam enables a high pressure product methane stream to be generated without expensive compression equipment and high energy consumption. Nickel, cobalt, iron, ruthenium, rhenium and alloys thereof are preferred catalysts, with the surface area thereof being preferably at least about 10 m2/gr. Conversion of the active surface carbon can also be accomplished by contact with hydrogen.

• Assignee: Union Carbide Corp
• Patent Number(s): US 4242103
• OSTI ID: 6794320
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKANES
CARBON
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL GASIFICATION
COBALT
DEPOSITS
ELEMENTS
FLUIDS
GASES
GASIFICATION
HYDROCARBONS
HYDROGEN
IRON
METALS
METHANATION
METHANE
NICKEL
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
REFRACTORY METALS
RHENIUM
RUTHENIUM
SYNTHESIS
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS