Preparation of Silicon Dioxide with a Fixed Content of Fluorine from Fluorosilicic Acid

Preparation of Silicon Dioxide with a Fixed Content of Fluorine from Fluorosilicic Acid

The process of obtaining silicon dioxide upon the interaction of fluorosilicic acid with an aqueous solution of ammonia is studied. The fluorine-containing compounds in synthesized dioxide are identified by 19 F NMR spectroscopy. It is shown that the two-stage method of precipitation followed by was...

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Veröffentlicht in:Theoretical foundations of chemical engineering 2018-07, Vol.52 (4), p.607-611
Hauptverfasser: Panasyuk, G. P., Azarova, L. A., Privalov, V. I., Belan, V. N., Voroshilov, I. G., Shpigun, L. K.
Format: Artikel
Sprache:eng
Schlagworte:
Ammonia
Chemistry
Chemistry and Materials Science
Fluorine
Industrial Chemistry/Chemical Engineering
NMR spectroscopy
Selected Articles from the Journal Khimicheskaya Tekhnologiya
Silica
Silicon dioxide
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Zusammenfassung:The process of obtaining silicon dioxide upon the interaction of fluorosilicic acid with an aqueous solution of ammonia is studied. The fluorine-containing compounds in synthesized dioxide are identified by 19 F NMR spectroscopy. It is shown that the two-stage method of precipitation followed by washing, allows producing silicon dioxide with a fluorine content of units of ppm.
ISSN:0040-5795
1608-3431
DOI:10.1134/S0040579518040231