29Si and 27Al MAS NMR spectra of mullites from different kaolinites
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Description
Mullites synthesized from four kaolinites with different random defect densities have been studied by 27Al and 29Si magic angle spinning nuclear magnetic resonance spectroscopy (MAS NMR) and X-ray diffraction (XRD). All these mullites showthe same XRD pattern. However, 29Si and 27Al MAS NMR spectra reveal that the mullites derived from kaolinites with high defect densities, have a sillimanite-type Al/Si ordering scheme and are low in silica, whereas those mullites derived from kaolinites with low defect densities, consist of both sillimaniteand mullite-type Al/Si ordering schemes and are rich in silica.
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| ID Code: | 1516 |
|---|---|
| Item Type: | Contribution to Journal (Journal Article) |
| Refereed: | Yes |
| Keywords: | MAS NMR spectrum, Mullite, Kaolinite, Defect density, HERN |
| DOI: | 10.1016/S1386-1425(03)00337-8 |
| ISSN: | 1386-1425 |
| Pure ID: | 60068488 |
| Divisions: | Past > QUT Faculties & Divisions > Faculty of Science and Technology Past > Research Centres > CRC for Diagnostics |
| Copyright Owner: | Copyright 2004 Elsevier |
| Copyright Statement: | Reproduced in accordance with the copyright policy of the publisher. |
| Deposited On: | 11 Jul 2006 00:00 |
| Last Modified: | 03 Aug 2024 20:01 |
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