Kinetics of the methanation of carbon oxides. [Using. gamma. --Al/sub 2/O/sub 3/-supported mixed oxide catalysts]

Journal Article · Tue Jun 01 04:00:00 EDT 1976 · Kinet. Catal. (USSR) (Engl. Transl.); (United States)

OSTI ID:7239708

Cognion, J M; Marguerin, J

The methanation of CO and CO/sub 2/ was studied in a chromatographic pulse reactor with hydrogen as carrier gas. The catalysts used were ..gamma..-Al/sub 2/O/sub 3/-supported mixed Ni and Mn oxides and mixed Ni and Cr oxides. The CO methanation rate for both catalysts may be represented by a zero-order equation, but the CO/sub 2/ methanation rate on the nickel--chromium catalyst is described by an equation of one-half order. These values obtained in a pulse reactor agree with data obtained by other authors in a flow reactor. The mixed nickel--chromium catalyst, for which the apparent activation energy for CO hydrogenation is 11 kcal/mole, has a higher activity than the supported catalyst, for which the activation energy of the same reaction is 15.6 kcal/mole. The apparent activation energy for CO/sub 2/ methanation over the nickel--chromium catalyst is 13 kcal/mole.

• Research Organization: Scientific-Research Center, Lyon
• OSTI ID: 7239708
• Journal Information: Kinet. Catal. (USSR) (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (USSR) (Engl. Transl.); (United States) Vol. 16:6; ISSN KICAA
• Country of Publication: United States
• Language: English

Related Subjects

090120* -- Hydrocarbon Fuels-- Preparation-- (1976-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
HYDROGEN
MANGANESE COMPOUNDS
MANGANESE OXIDES
METHANATION
NICKEL COMPOUNDS
NICKEL OXIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS