Catalytic oxidation of hydrogen on laminar graphite compounds with transition metals. I. Kinetics and reaction mechanism
Journal Article
·
· Kinet. Catal. (Engl. Transl.); (United States)
OSTI ID:6299779
Laminar graphite compounds (LGC) with transition metals (Pt, Pd, Ru, Fe, Co, Ni) display a significant catalytic activity for the oxidation of hydrogen at 150 to 400/sup 0/C. When the reaction is catalyzed in presence of a large excess of oxygen, the order for hydrogen is first and for oxygen is zero; the reaction rate is determined by the rate of interaction between H/sub 2/ and adsorbed oxygen (mechanism I). When catalysis takes place in an excess of hydrogen on LGC with platinum metals, which are characterized by the least bond energy with oxygen (q), the reaction rate is determined by the rate of O/sub 2/ chemisorption; on LGC-Co, which has a higher q value, mechanism I is retained; and for LGC-Ni and LGC-Fe, which have still higher q values, both reactants are chemisorbed and catalytic reaction rate is determined by the rate of interaction between the adsorbed particles.
- OSTI ID:
- 6299779
- Journal Information:
- Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 21:6; ISSN KICAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
08 HYDROGEN
080800* -- Hydrogen-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
CARBON
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISORPTION
COBALT
COMPARATIVE EVALUATIONS
ELEMENTS
GRAPHITE
HIGH TEMPERATURE
HYDROGEN
IRON
KINETICS
METALS
NICKEL
NONMETALS
OXIDATION
PALLADIUM
PLATINUM
PLATINUM METALS
REACTION KINETICS
REFRACTORY METALS
RUTHENIUM
SEPARATION PROCESSES
SORPTION
TRANSITION ELEMENTS
080800* -- Hydrogen-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
CARBON
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISORPTION
COBALT
COMPARATIVE EVALUATIONS
ELEMENTS
GRAPHITE
HIGH TEMPERATURE
HYDROGEN
IRON
KINETICS
METALS
NICKEL
NONMETALS
OXIDATION
PALLADIUM
PLATINUM
PLATINUM METALS
REACTION KINETICS
REFRACTORY METALS
RUTHENIUM
SEPARATION PROCESSES
SORPTION
TRANSITION ELEMENTS