29Si and 27Al MAS NMR spectra of mullites from different kaolinites
He, Hongping, Guo, Jiugao, Zhu, Jianxi, Yuan, Peng, & Hu, Cheng (2004) 29Si and 27Al MAS NMR spectra of mullites from different kaolinites. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 60(5), pp. 1061-1064.
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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|Item Type:||Journal Article|
|Keywords:||MAS NMR spectrum, Mullite, Kaolinite, Defect density, HERN|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|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:||10 Aug 2011 18:39|
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