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

G. P. Panasyuk; L. A. Azarova; V. I. Privalov; V. N. Belan; I. G. Voroshilov; L. K. Shpigun

doi:10.1134/S0040579518040231

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

Autores: Panasyuk G.P.¹, Azarova L.A.¹, Privalov V.I.¹, Belan V.N.¹, Voroshilov I.G.¹, Shpigun L.K.¹
Afiliações:
1. Kurnakov Institute of General and Inorganic Chemistry
Edição: Volume 52, Nº 4 (2018)
Páginas: 607-611
Seção: Selected Articles from the Journal Khimicheskaya Tekhnologiya
URL: https://bakhtiniada.ru/0040-5795/article/view/172198
DOI: https://doi.org/10.1134/S0040579518040231
ID: 172198

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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.