Solid state NMR characterisation of crystalline Na2OZrO2SiO2 phases期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Solid state NMR characterisation of crystalline Na₂OZrO₂SiO₂ phases

Authors:	TJ Bastow ME Hobday ME Smith HJ Whitfield

Institution:	^a CSIRO Division of Materials Science and Technology, Private Bag 33, Rosebank MDC Clayton, Victoria 3169, Australia ^b Department of Applied Chemistry, Royal Melbourne Institute of Technology, Box 2476W, Melbourne, Victoria 3001, Australia ^c Physics Laboratory, University of Kent, Canterbury, Kent, CT2 7NR, UK ^d Department of Applied Physics, Royal Melbourne Institute of Technology, Box 2476W, Melbourne, Victoria 3001, Australia

Abstract:	The NMR interactions of crystalline phases in the system Na₂O-ZrO₂-SiO₂ have been studied by a combination of static and magic angle spinning NMR methods for the first time. A full multinuclear (¹⁷O, ²³Na, ²⁹Si and ⁹¹Zr) approach has been employed that allows the phases to be clearly identified. NMR interactions such as ²⁹Si isotropic chemical shift correlate with the known structural units present. For ²³Na the different sites can often be distinguished on the basis of differing quadrupolar interactions.

Keywords:	Solid state NMR Na₂O-ZrO₂-SiO₂ phases NMR interactions Characterisation
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