Some remarks on substitution effects in sodalites

Peters, L., Vega-Flores, G. and Depmeier, W. (2009) Some remarks on substitution effects in sodalites Progress in Solid State Chemistry, 37 (2-3). pp. 243-249. DOI 10.1016/j.progsolidstchem.2009.11.009.

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Some recent examples of substitution effects in the three partial structures of selected socialites are presented. Framework-cation, and cage-cation substitution effects are discussed for the series vertical bar(Eu(x)Ca(2-x))(4)(OH)(8)vertical bar[(Al(2+x)Si(1-x))(4)O(24)]-SOD, cage-anion substitutions for vertical bar Ca(8)[(WO(4))(x)(MoO(4))(1-x)](2)vertical bar[Al(2)O(24)]-SOD. While in a first approximation decomposition into partial structures seems reasonable, it is shown that, however, effects arising from substitutions in one partial structure are not limited to it. This is due to the fact that three main interactions have to be considered, namely, cage-cation - framework, cage-anion - framework, and cage-cation - cage-anion interactions. These can be co-operative or competitive and may lead to structural frustrations. (C) 2009 Published by Elsevier Ltd.

Document Type: Article
Keywords: Sodalite Substitution effects Phase transitions cubic aluminate sodalite powder-diffraction x-ray refinement bicchulite framework phase sr8<al12o24>(cro4)2 ca8<al12o24>(wo4)2 ca2<al2sio6>(oh)2
Research affiliation: Kiel University
DOI etc.: 10.1016/j.progsolidstchem.2009.11.009
ISSN: 0079-6786
Date Deposited: 22 Dec 2011 05:19
Last Modified: 08 Oct 2012 10:10

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