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Solid-state high-resolution 29Si NMR spectroscopy of synthetic 14 Å, 11 Å and 9 Å tobermorites

✍ Scribed by W. Wieker; A.-R. Grimmer; A. Winkler; M. Mägi; M. Tarmak; E. Lippmaa

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
405 KB
Volume
12
Category
Article
ISSN
0008-8846

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✦ Synopsis

A new method for the investigation of th~ostructura of silicates -solid-state high-resolution ~=Si NHR sBectros-coBy -was used for the investigation of 14 A, 11A and 9 A tobermoritss prepared under different conditions. It is possible to determine selectively the individual SiO~ structural units in tobermorites (end groups, chain mldBle groups, branching sites, etc.) and to draw conclusions about the type and structure of the silicate anions in the lattice. Synthetic 14 A tobermorlte consists predominantly of slngle chains, the 11A and 9 A tobermorites contain, depending on the method of preparation, double chains and/or single chains.

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