Method of preparing silicon

Details Method of preparing silicon Method of preparing silicon

1987-04-27

1988-07-12

Doll, John

Chemistry of inorganic compounds

Silicon or compound thereof

Elemental silicon

423349, C01B 3302

Patent

active

047568968

ABSTRACT:
The invention relates to a method for preparing polycrystalline pure silicon by reducing gaseous silicon tetrafluoride at a raised temperature by means of alkali metal or alkali earth and by recovering the silicon by means of liquid phase separation. According to the invention, the gaseous silicon tetrafluoride is reduced by fused alkali metal or alkali earth or powder dispersed into a liquid intermediate agent boiling at a high temperature.

REFERENCES:
patent: 2791499 (1957-05-01), Clegg et al.
patent: 2898195 (1956-05-01), Banus et al.
patent: 4442082 (1984-04-01), Sanjurjo
patent: 4584181 (1986-04-01), Nanis
In re Migrdichian, 54 USPQ190.

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