Preparation of Silicon Dioxide with a Fixed Content of Fluorine from Fluorosilicic Acid |
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| Authors: | G P Panasyuk L A Azarova V I Privalov V N Belan I G Voroshilov L K Shpigun |
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| Affiliation: | 1.Kurnakov Institute of General and Inorganic Chemistry,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | 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 19F 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. |
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