Laassiri, S., Bion, N., Duprez, D., Alamdari, H. and Royer, S. (2013) Role of Mn+ cations in the redox and oxygen transfer properties of BaMxAl12−xO19−δ (M = Mn, Fe, Co) nanomaterials for high temperature methane oxidation. Catalysis Science and Technology, 3(9), pp. 2259-2269. (doi: 10.1039/C3CY00192J)
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Abstract
BaMxAl12−xO19−δ (M = Mn, Fe, Co, x = 1, 2) hexaaluminate nanomaterials were successfully prepared using the ARS (Activated Reactive Synthesis) process, a top-down and solvent free original synthesis route. The crystal sizes of the nanomaterials range at 24 ± 2 nm, which allows them to display high surface area (from 60 to 100 m2 g−1). The role of Mn+ cations in the redox and oxygen transfer properties of the nanomaterials was studied by H2-TPR and 18O/16O isotopic exchange, respectively. The nature of the transition metal as well as its content is observed to play a key role in the oxygen transfer properties. The catalytic properties of the nano-hexaaluminates, evaluated for methane oxidation, a reaction involving severe conditions (high temperature), resulted from multiple factors including oxygen transfer properties and transition metal valence and concentration on the surface.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Laassiri, Dr Said |
| Authors: | Laassiri, S., Bion, N., Duprez, D., Alamdari, H., and Royer, S. |
| College/School: | College of Science and Engineering > School of Chemistry |
| Journal Name: | Catalysis Science and Technology |
| Publisher: | Royal Society of Chemistry |
| ISSN: | 2044-4753 |
| ISSN (Online): | 2044-4761 |
| Published Online: | 13 May 2013 |
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