Time-resolved energy-dispersive and conventional EXAFS studies of the interactions of nitrous oxide with supported copper catalyst
| Autor: | J. W. Couves, G. Sankar, G.N. Greaves, C. R. A. Catlow, John Meurig Thomas, David Waller |
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| Rok vydání: | 1992 |
| Předmět: |
Extended X-ray absorption fine structure
Inorganic chemistry General Engineering Oxide chemistry.chemical_element Copper Catalysis Metal chemistry.chemical_compound chemistry Transition metal Chemisorption visual_art Monolayer visual_art.visual_art_medium Physical chemistry Physical and Theoretical Chemistry |
| Zdroj: | The Journal of Physical Chemistry. 96:7485-7489 |
| ISSN: | 1541-5740 0022-3654 |
| Popis: | The basis of the ''N2O method'' of determining the surface area of copper catalyst is quantitatively tested. At temperatures of around 60-degrees-C only a surface monolayer of Cu(I) oxide is formed: this oxide is structurally different from a monolayer slice of Cu2O. EXAFS data show that the average particle diameter of Cu on SiO2 studied here is less than 25 angstrom. On the basis of our EXAFS and other studies, the surface oxide may be pictured in terms of oxygen atoms chemisorbed at the long bridge sites of the {110} faces of metallic copper. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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