Comparison of oxidation of carbon monoxide on superconducting and insulating Y-Ba-Cu-O catalysts

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(90)90051-K· OSTI ID:5678995

Halasz, I; Brenner, A; Simon Ng, K Y ^[1]; Shelef, M ^[2]

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1. Wayne State Univ., Detroit, MI (USA)
2. Ford Motor Co., Dearborn, MI (USA)

Investigation of the catalytic activity of Y{sub 2}BaCuO{sub 5} has shown high and stable activity for CO oxidation when the catalyst is slightly reduced, comparable with the activity of the best catalysts for CO oxidation. This oxide was found to be about two orders of magnitude more active than the superconducting perovskite YBa{sub 2}Cu{sub 3}O{sub 7-x}. Furthermore, in contrast to the perovskite catalyst, surface reduction increased the activity of Y{sub 2}BaCuO{sub 5}. Zero-order kinetics were observed for O{sub 2} on both the oxidized and reduced forms of the catalyst, but the reaction order for CO was in the range of 1.1 to 1.5. Differences between the oxidized and reduced forms of the catalyst and between the two types of Y-Ba-Cu-O catalysts are discussed.

• OSTI ID: 5678995
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 126:1; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330702 -- Emission Control-- Carbon Monoxide
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION CONTROL
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
CONTROL
COPPER COMPOUNDS
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
KINETICS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
POLLUTION CONTROL
REACTION KINETICS
REDUCTION
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES