HYDROTHERMAL SYNTHESIS OF SODIUM ZIRCONIUM SILICATES AND CHARACTERIZATION OF THEIR PROPERTIES

Authors
BORTUN AI BORTUN LN CLEARFIELD A
Citation
Ai. Bortun et al., HYDROTHERMAL SYNTHESIS OF SODIUM ZIRCONIUM SILICATES AND CHARACTERIZATION OF THEIR PROPERTIES, Chemistry of materials, 9(8), 1997, pp. 1854-1864
Citations number
18
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Chemistry of materials → ACNP
ISSN journal
08974756
Volume
9
Issue
8
Year of publication
1997
Pages
1854 - 1864
Database
ISI
SICI code
0897-4756(1997)9:8<1854:HSOSZS>2.0.ZU;2-I
Abstract
By studying reactions in the system Zr(OC3H7)(4)-silicic acid (Na2SiO3 , Na2Si3O7)-NaOH-H2O under mild hydrothermal conditions (180-190 degre es C) the formation of three novel layered sodium zirconium silicates, Na2Zr5Si2O15. 3H(2)O, Na2Zr5Si2O15. 4H(2)O, and Na2ZrSi3O9 . 3H(2)O, and five other compounds: Na4Zr2Si3O12, Na3HZrSi2O8, Na4Zr2Si5O16. H2O , Na4ZrSi3O10, and Na2ZrSi3O9 . 2H(2)O, have been found. All the synth esized materials were characterized by elemental analysis, TGA, X-ray, IR, and Si-29 MAS NMR spectroscopy. The ion-exchange behavior of sodi um zirconium silicates toward alkali, alkaline-earth, and some di-and trivalent metal cations was studied.