Carbon monoxide oxidation over three different states of copper: Development of a model metal oxide catalyst

Thesis/Dissertation · Sat Oct 01 00:00:00 EDT 1994

DOI:https://doi.org/10.2172/10107712· OSTI ID:10107712

Jernigan, Glenn Geoffrey ^[1]

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1. California Univ., Berkeley, CA (United States). Dept. of Chemistry

Carbon monoxide oxidation was performed over the three different oxidation states of copper -- metallic (Cu), copper (I) oxide (Cu₂O), and copper (II) oxide (CuO) as a test case for developing a model metal oxide catalyst amenable to study by the methods of modern surface science and catalysis. Copper was deposited and oxidized on oxidized supports of aluminum, silicon, molybdenum, tantalum, stainless steel, and iron as well as on graphite. The catalytic activity was found to decrease with increasing oxidation state (Cu > Cu₂O > CuO) and the activation energy increased with increasing oxidation state (Cu, 9 kcal/mol < Cu₂O, 14 kcal/mol < CuO, 17 kcal/mol). Reaction mechanisms were determined for the different oxidation states. Lastly, NO reduction by CO was studied. A Cu and CuO catalyst were exposed to an equal mixture of CO and NO at 300--350 C to observe the production of N₂ and CO₂. At the end of each reaction, the catalyst was found to be Cu₂O. There is a need to study the kinetics of this reaction over the different oxidation states of copper.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 10107712
• Report Number(s): LBL--36383; ON: DE95004682
• Country of Publication: United States
• Language: English

Related Subjects

330701
330702
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ALUMINIUM OXIDES
CARBON DIOXIDE
CARBON MONOXIDE
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
COMPARATIVE EVALUATIONS
COPPER
COPPER OXIDES
GRAPHITE
IRON OXIDES
MEASURING METHODS
MOLYBDENUM OXIDES
NITRIC OXIDE
NITROGEN OXIDES
OXIDATION
REDUCTION
SILICON OXIDES
STAINLESS STEELS
TANTALUM OXIDES
TEST FACILITIES
VALENCE