FIELD: chemistry.
SUBSTANCE: invention relates to methods of producing fluoride compounds and, in particular, to methods of silicon tetrafluoride by acidic hydrolysis of fluoride salts of alkali metals or alkali earth metals and aluminium. Method of silicon tetrafluoride production includes contact of initial fluoroalumonate, which includes fluoride salts of alkali or alkali earth metals, and aluminium, gaseous acid and silicon source to obtain silicon tetrafluoride and, at least, one byproduct. Method of silane production includes acidic hydrolysis of silane production byproducts to obtain silicon tetrafluoride.
EFFECT: invention makes it possible to produce silicon tetrafluoride, use waste products, formed in silane production, and improve silane production efficiency.
64 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING MONOSILANE | 2011 |
|
RU2466089C1 |
| METHOD OF CONTINUOUS MONOSILANE PRODUCTION | 2009 |
|
RU2414421C2 |
| METHOD FOR INACTIVATION OF IMPURITY IN LITHIUM FLUORIDE SORBENT | 2016 |
|
RU2627427C1 |
| METHOD OF PROCESSING ZIRCONIUM CONCENTRATE | 0 |
|
SU1754659A1 |
| METHOD OF PREPARING HIGH-PURITY SILICON POWDER FROM SILICON PERFLUORIDE WITH SIMULTANEOUS PREPARATION OF ELEMENTARY FLUORINE, METHOD OF SEPARATING SILICON FROM SALT MELT, SILICON POWDER AND ELEMENTARY FLUORINE OBTAINED BY INDICATED METHOD, AND SILICON TETRAFLUORIDE PREPARATION PROCESS | 2004 |
|
RU2272785C1 |
| METHOD OF SILICIUM TETRAFLUORIDE PRODUCTION, METHOD OF SEPARATION OF SILICIUM TETRAFLUORIDE FROM OXYGEN AND HIGH-VOLATILE FLUORIDE IMPURITIES, METHOD OF PRODUCTION OF SLICIUM POWDER FROM SILICIUM TETRAFLUORIDE | 2003 |
|
RU2324648C2 |
| METHOD OF PRODUCING BORON-ALUMINUM ALLOY | 0 |
|
SU1713963A1 |
| METHOD OF PRODUCING SYNTHETIC FLUORITE | 2011 |
|
RU2465206C1 |
| METHOD FOR SYNTHESIS OF INORGANIC FLUORINE-CONTAINING COMPOUNDS | 2004 |
|
RU2278073C1 |
| METHOD FOR ALKYLATION OF ALKANES BY C3-C5-ALKYL HALIDES USING SOLID ACID CATALYST | 1998 |
|
RU2190589C2 |
