A Al-27 MAS NMR study of a sol-gel produced alumina: Identification of the NMR parameters of the theta-Al2O3 transition alumina phase

O'Dell, L. A. and Savin, S. L. P. and Chadwick, A. V. and Smith, Mark E. (2007) A Al-27 MAS NMR study of a sol-gel produced alumina: Identification of the NMR parameters of the theta-Al2O3 transition alumina phase. Solid State Nuclear Magnetic Resonance, 31 (4). pp. 169-173. ISSN 1527-3326

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Abstract

Al-27 MAS NMR has been used to study a sol-gel prepared alumina annealed at various temperatures. Two-field simulation of the sample heated to 1200 degrees C confirmed the presence of corundum, as suggested by XRD, and also the presence of nanocrystalline theta-Al2O3. Al-27 MAS NMR chemical shifts, quadrupolar coupling constants and asymmetry parameters are reported for the tetrahedral and octahedral aluminium sites within theta-Al2O3.

Item Type:
Journal Article
Journal or Publication Title:
Solid State Nuclear Magnetic Resonance
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3108
Subjects:
Departments:
ID Code:
52865
Deposited By:
Deposited On:
29 Feb 2012 11:43
Refereed?:
Yes
Published?:
Published
Last Modified:
20 Oct 2020 01:55