Journal article
Effect of metal-oxygen bond strength on properties of oxides. 1. Infrared spectroscopy of adsorbed carbon monoxide and carbon dioxide
Langmuir, Vol.2(1), pp.73-79
01/01/1986
DOI: 10.1021/la00067a013
Abstract
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The adsorptive properties of a series of oxides (MgO, ZnO, Al2O3, TiO2, and SiO2) for CO/CO2 and CO/CO2/H2O gas mixtures were probed at 310 and 660 K by infrared spectroscopy. The primary adsorbed species observed were carbonate, bicarbonate, and formate species. The relative amounts of the adsorbed species were related to the metal-oxygen bond strength of the oxide. A weak metal-oxygen bond (MgO) favors carbonate and bicarbonate species in CO/CO2, an intermediate strength (Al2O3, TiO2) favors formate species, and a strong metal-oxygen bond (SiO2) inhibits the adsorption of CO and CO2. The presence of water inhibits the formation of carbonates and formates on Al2O3 and TiO2, while water enhances the formation of formates on MgO. These results are interpreted in terms of competitive adsorption and reaction between the adsorbed species.
Details
- Title: Subtitle
- Effect of metal-oxygen bond strength on properties of oxides. 1. Infrared spectroscopy of adsorbed carbon monoxide and carbon dioxide
- Creators
- David G RethwischJ. A Dumesic
- Resource Type
- Journal article
- Publication Details
- Langmuir, Vol.2(1), pp.73-79
- DOI
- 10.1021/la00067a013
- ISSN
- 0743-7463
- eISSN
- 1520-5827
- Publisher
- American Chemical Society
- Language
- English
- Date published
- 01/01/1986
- Academic Unit
- Chemical and Biochemical Engineering
- Record Identifier
- 9984003914202771
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