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Aqueous Alkali‐Metal Silicate Anions Containing Fully Condensed Four‐Coordinate Sites
Author(s) -
Knight Christopher T. G.,
Balec Raymond J.,
Kinrade Stephen D.
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201205606
Subject(s) - silicate , alkali metal , aqueous solution , polymerization , zeolite , condensation , inorganic chemistry , chemistry , metal , mineralogy , organic chemistry , physics , thermodynamics , catalysis , polymer
Conspicuous absence : 29 Si 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.