Infrared study of CO adsorption on reduced and oxidised silica-supported copper catalysts

Millar, Graeme J., Rochester, Colin H., & Waugh, Kenneth C. (1991) Infrared study of CO adsorption on reduced and oxidised silica-supported copper catalysts. Journal of the Chemical Society, Faraday Transactions, 87(9), pp. 1467-1472.

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Abstract

FTIR spectra are reported of CO adsorbed on silica-supported copper catalysts prepared from copper(II) acetate monohydrate. Fully oxidised catalyst gave bands due to CO on CuO, isolated Cu2+ cations on silica and anion vacancy sites in CuO. The highly dispersed CuO aggregated on reduction to metal particles which gave bands due to adsorbed CO characteristic of both low-index exposed planes and stepped sites on high-index planes. Partial surface oxidation with N2O or H2O generated Cu+ adsorption sites which were slowly reduced to Cu° by CO at 300 K. Surface carbonate initially formed from CO was also slowly depleted with time with the generation of CO2. The results are consistent with adsorbed carbonate being an intermediate in the water-gas shift reaction of H2O and CO to H2 and CO2.

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ID Code: 61971
Item Type: Journal Article
Refereed: Yes
Keywords: catalyst, copper, infrared, water gas shift, carbon monoxide
DOI: 10.1039/FT9918701467
ISSN: 1364-5455
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Catalysis and Mechanisms of Reactions (030601)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 1991 Royal Society of Chemistry
Copyright Statement: Restrictions on further re-use and further distribution
Deposited On: 21 Aug 2013 23:32
Last Modified: 21 Aug 2013 23:54

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