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
Full text not available from this repository.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.