Process for purifying halogenosilanes

Details Process for purifying halogenosilanes Process for purifying halogenosilanes

1976-10-14

1978-09-05

Cooper, Jack

Chemistry of inorganic compounds

Silicon or compound thereof

Halogen containing

423 96, 423494, C01B 3308

Patent

active

041120574

ABSTRACT:
Halogenosilanes and halogenogermanes which are contaminated by a boron-coining impurity are purified by treatment with an effective amount of a hydrated metal oxide or a hydrated silicate containing from about 3 to about 8% by weight of water, and then distilling the treated halogenosilane or halogenogermane at a temperature about 3.degree. to about 15.degree. C above its boiling temperature, and at atmosphere pressure.

REFERENCES:
patent: 2812235 (1957-11-01), Winslow
patent: 3252752 (1966-05-01), Pohl et al.
patent: 3540861 (1970-11-01), Bradley et al.

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