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Exchange reactions of oxides. Part IX
Abstract
The kinetics of exchange of oxygen-18 between enriched oxygen gas and 38 inorganic oxides and 1 oxy-acid salt has been examined in detail. Most of the exchange reactions occur by a dissociative atomic mechanism confined to the surface layer of oxygen ions. For these there is a strong compensation effect between A0 and E in the rate expression: E shows a systematic fall with increasing size of the unit-crystal cell and related crystal parameters: the plots separate the oxides into structure-dependent groups. The slow stage is the desorption of oxygen. The oxides PbO, PdO, AgO, and CuO exchange the surface layer by a molecular reaction which also occurs to an appreciable extent, together with the atomic mechanism, on a number of other oxides. Na2WO4, V2O5, MoO3, and WO3 exchange the whole of the bulk oxygen with the gas phase by a combination of both mechanisms. SiO2 and GeO2 are inactive. Possible mechanisms for the two main reactions are discussed.
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Cited by
Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces
Man, I. C., Su, H., Calle‐Vallejo, F., Hansen, H. A., Martínez, J. I., Inoglu, N. G., Kitchin, J., Jaramillo, T. F., Nørskov, J. K., & Rossmeisl, J. (2011) · ChemCatChem · doi:10.1002/cctc.201000397 · Cited by 4,769
Perovskites as Substitutes of Noble Metals for Heterogeneous Catalysis: Dream or Reality
Royer, S., Duprez, D., Can, F., Courtois, X., Batiot-Dupeyrat, C., Laassiri, S., & Alamdari, H. (2014) · Chemical Reviews · doi:10.1021/cr500032a · Cited by 927
THE MECHANISM OF THE SELECTIVE OXIDATION OF ETHYLENE TO ETHYLENE OXIDE
Kilty, P. A., & Sachtler, W. M. H. (1974) · Catalysis Reviews · doi:10.1080/01614947408079624 · Cited by 294
Metadata
- Authors
- Winter, E. R. S.
- Venue
- Journal of the Chemical Society A: Inorganic, Physical, Theoretical
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 1968
- Pages
- 2889
- ISSN
- 0022-4944 (ISSN-L)
- OpenAlex
- W2124636682
- Cited by
- 176
- References
- 0
- FWCI
- 4.51
- Type
- journal article
- Language
- en
- Open access
- closed
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