Process for producing methane from hydrogen and carbon monoxide
AssigneeThe Dow Chemical Company
InventorsClayton D. Wood, Edward F. Gleason
Life of this patent
Estimating the term…
Abstract
Selectively produce methane under Fischer-Tropsch conditions using a catalyst consisting essentially of ruthenium supported on an oxide of tantalum, niobium, vanadium or mixtures thereof, the support preparation including calcination at a temperature such that essentially no crystalline metal oxide is detectable by X-ray diffraction prior to deposition of the catalytic metal.
Claims12
In a process for producing hydrocarbons by contacting carbon monoxide and hydrogen at reactive conditions, the improvement comprising increasing the yield of methane by contacting the carbon monoxide and hydrogen with a catalyst consisting essentially of:
- (a) a catalytic metal component which is from about 0.1 to about 10 percent by weight, based on the weight of the catalyst, of ruthenium;
- and the balance being
- (b) a support component which is at least one oxide of tantalum, niobium, vanadium or mixtures thereof,
- the support preparation including calcination at a temperature such that essentially no crystalline metal oxide is detectable by X-ray diffraction prior to deposition of the catalytic metal thereon.
In a process for producing methane by contacting carbon monoxide and hydrogen at reactive conditions, the improvement comprising contacting the carbon monoxide and hydrogen with a catalyst composition consisting essentially of:
- (a) from about 0.1 to about 10 percent by weight, based on the weight of the composition, ruthenium;
- and
- (b) a support component which is at least one non-crystalline oxide of tantalum, niobium, vanadium or mixtures thereof,
- the support preparation including calcination at a temperature such that essentially no crystalline metal oxide is detectable by X-ray diffraction prior to deposition of the catalytic metal thereon under conditions sufficient to produce a yield of at least about 25 percent.
Dependencies are inferred from the claim text.