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Aluminium environments in mullite and an amorphous sol-gel precursor examined by 27Al triple-quantum MAS NMR

Lookup NU author(s): Emeritus Professor Derek Thompson

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Abstract

The 27Al triple-quantum MAS spectrum of an amorphous sol-gel precursor of 2:1 type mullite has been compared to those of crystalline 2:1 type mullite and andalusite. For the 2:1 type mullite and its precursor three peaks were observed. The true isotropic chemical shifts and the composite quadrupolar parameters were determined. The structural significance of the central peak in the spectrum of the precursor material is discussed in the context of the well-known structures of the two other crystalline phases. © 1998 Elsevier Science Ltd. All rights reserved.

Publication metadata

Author(s): Bodart PR, Parmentier J, Harris RK, Thompson DP

Publication type: Article

Publication status: Published

Journal: Journal of Physics and Chemistry of Solids

Year: 1999

Volume: 60

Issue: 2

Pages: 223-228

Print publication date: 29/12/1998

ISSN (print): 0022-3697

ISSN (electronic): 1879-2553

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/S0022-3697(98)00275-3

DOI: 10.1016/S0022-3697(98)00275-3

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