Effect of alkali metal cations on silicate structures in aqueous solution

A. V. McCormick, A. T. Bell, C. J. Radke

Research output: Contribution to journalConference articlepeer-review

9 Scopus citations


By means of 29Si NMR spectroscopy, it is established that the distribution of silicate anions in alkaline silicate solutions is a moderate function of base composition. At a fixed SiO2 concentration and silicate ratio, the proportion of Si present in oligomeric and cage-like structures increases in progressing from Li to Cs hydroxide. This trend is ascribed to cation-silicate anion pairing and to a higher selectivity for ion pairing by large silicate anions as cation size increases.

Original languageEnglish (US)
Pages (from-to)222-235
Number of pages14
JournalACS Symposium Series
Issue number368
StatePublished - 1988
EventPerspectives in Molecular Sieve Science - Toronto, Canada
Duration: Jun 5 1988Jun 11 1988


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