Aqueous Alkali-Metal Silicate Anions Containing Fully Condensed Four-Coordinate Sites

Aqueous Alkali-Metal Silicate Anions Containing Fully Condensed Four-Coordinate Sites

Conspicuous absence: 29Si NMR studies show that highly condensed, four‐coordinate Si‐containing anions are common in concentrated alkali‐metal silicate solutions, but reveal no evidence for the existence of specialized zeolite building units. The results add to the mounting evidence that silicate po...

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Veröffentlicht in:Angewandte Chemie International Edition 2012-09, Vol.51 (39), p.9900-9903
Hauptverfasser: Knight, Christopher T. G., Balec, Raymond J., Kinrade, Stephen D.
Format: Artikel
Sprache:eng
Schlagworte:
Anions
Anions - chemistry
Buildings
Condensation polymerization
Condensing
Construction
Magnetic Resonance Spectroscopy
Metals, Alkali - chemistry
Mounting
NMR spectroscopy
Polymerization
Silicates
Silicates - chemistry
structure elucidation
zeolite formation
Zeolites
Zeolites - chemistry
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Beschreibung
Zusammenfassung:Conspicuous absence: 29Si NMR studies show that highly condensed, four‐coordinate Si‐containing anions are common in concentrated alkali‐metal silicate solutions, but reveal no evidence for the existence of specialized zeolite building units. The results add to the mounting evidence that silicate polymerization simply proceeds through stepwise condensation of monosilicate tetrahedra.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201205606