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http://142.54.178.187:9060/xmlui/handle/123456789/19631| Title: | Oxidation of CO by 02 over ZnO Studied by FTIR Spectroscopy |
| Authors: | GHULAM HUSSAIN |
| Issue Date: | 20-Oct-2009 |
| Publisher: | HEJ Research Institute of Chemistry, University of Karachi, Karachi. |
| Citation: | Boccuzzi, F., Chiorino, A., Tsubota, S., & Haruta, M. (1996). FTIR study of carbon monoxide oxidation and scrambling at room temperature over gold supported on ZnO and TiO2. 2. The Journal of Physical Chemistry, 100(9), 3625-3631. |
| Abstract: | The adsorption of CO at room temperature on finely divided ZnO surfaces, studied by FTIR, shows reversible bands (2250-2050 cm-I) and irreversible absorption bands (1800-600 cm-I ). The irreversible absorption bands (1800-600 cm-I) are assigned to various species such as bi- and monodentate carbonates. The band position of the reversibly adsorbed species depends on the extent of the surface carbonates, formed by the oxidation of CO. The order of introduction of CO and 02 and whether the ZnO surface is oxidised or reduced, gave significantly different results in terms of species formed from irreversible adsorption. The strongest carbonate formation occurred on heating to 185 oc after 02 was added to the pre-adsorbed CO on an oxidised ZnO surface at room temperature followed by heating to 185°c in the presence of the two-gas mixture. |
| URI: | http://142.54.178.187:9060/xmlui/handle/123456789/19631 |
| ISSN: | 0253-5106 |
| Appears in Collections: | Issue 05 |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| ViewByVolume.aspx?v=13&i=VOLUME%2031,%20NO5,%20OCT%202009.htm | 148 B | HTML | View/Open |
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