JaLCDOI 10.18926/ESR/13921
FullText URL ESR_4_73.pdf
Author Kohara, Shizuo| Kawahara, Akira|
Abstract The configuration of the Si-O framework in alkali zinc silicates has been investigated on the basis of recently determined structures. The results have shown that there is a linear correlation between the ionic radii of alkali ions and the molar abundance of ZnO+SiO2 per one alkali ion in the structure. This indicates that in the case of zinc silicates, the configuration of the Si-O frameworks is largely influenced by the ionic radii of alkali ions in the structure. On the contrary, in the case of alumino-silicates, the configuration of the Si-O framework is independent of ionic radii of alkali ions. In the former, the Si-O framework is considered to be plastic, while in the latter, it could be called rigid. The latter extreme cases are those of zeolites. In this case, the configuration on frameworks is not entirely influenced by the ionic radii of alkali atoms present. These results are discussed in connection with the historical investigations of silicate structures.
Keywords silicate zinc silicate alumino-silicate framework ionic radii framework configu-ration
Publication Title Okayama University Earth Science Report
Published Date 1997-09-20
Volume volume4
Issue issue1
Start Page 73
End Page 78
ISSN 1340-7414
language 英語
Copyright Holders 岡山大学地球科学研究報告編集委員会
File Version publisher
NAID 120002310344