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Elaboration of nanometric amorphous silica from quartz-based minerals using the fluorination method |
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| Authors: | Larisa Petrovna Demyanova Viaseslav S Rimkevich Alexandre S Buynovskiy |
| Institution: | aGeology and Wildlife Management Institute, Far East Branch, Russian Academy of Sciences, 675000 Blagoveschensk, Russian Federation;bTechnological Institute, National Nuclear Research University, Seversk, Russian Federation |
| Abstract: | A method of elaboration of nanometric amorphous silica is proposed using a rational processing of quartz-based ores with the help of a fluorination method. The different steps of the process are described, including the kinetics of the interaction mechanism of ammonium bifluoride with the initial raw materials, the sublimation of ammonium fluorosilicate and the formation of nanometric amorphous silica. Rate constants and activation energy of the chemical reactions are calculated. |
| Keywords: | Silica-based raw materials Quartz sand Ammonium bifluoride Fluorination process Sublimation Ammonium hexafluorosilicate Nanometric amorphous silica |
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