Characterizing the infrared bands of aqueous soluble silicates

The Journal of Physical Chemistry. a
James S FalconeEmily R Schenk

Abstract

A systematic study of the transition in silicate solutions from a solution containing a highly complex mixture of silicate species to one dominated by a single symmetric cubic octamer has been completed. Infrared and NMR results have been analyzed and compared with each other and literature values. The FT-IR band locations are dependent on many factors, particularly the dominant band near 1000 cm(-1). The analysis supports Dent Glasser's hypothesis that silica polymerization results from changes in distribution between the larger colloidal silica and intermediate sized anionic fraction rather than the continuous stepwise growth seen with organic polymerization. A constant value of silica monomer seen in all solutions independent of the complexity of the species or their distribution suggests equilibrium between the monomeric form and larger anions and polymers that is independent of their structure. No evidence is uncovered for specific silicate species dependent IR band assignments.

References

Jan 1, 1951·The Journal of Physical and Colloid Chemistry·R V NAUMAN, P DEBYE
Feb 16, 2006·Journal of the American Chemical Society·Herman ChoDavid A Dixon
Feb 24, 2006·The Journal of Physical Chemistry. B·Mohamed Haouas, Francis Taulelle
Sep 25, 2007·Angewandte Chemie·Christopher T G KnightStephen D Kinrade
Nov 1, 1948·Journal of the American Chemical Society·R C MERRILL, R W SPENCER

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Citations

Jul 10, 2013·The New Phytologist·Congwu HeFangsen Xu
Oct 16, 2010·Chemical Society Reviews·Alexander AertsJohan A Martens
Mar 13, 2019·Physical Chemistry Chemical Physics : PCCP·Emelie J NilssonViveka Alfredsson
Sep 19, 2020·Materials·Joanna Mastalska-PopławskaTomasz Gawenda

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