Method for manufacturing boron trichloride

Details Method for manufacturing boron trichloride Method for manufacturing boron trichloride

1977-06-29

1978-11-14

Peters, G. O.

Chemistry of inorganic compounds

Boron or compound thereof

Binary compound

423499, C01B 3506

Patent

active

041255909

ABSTRACT:
This invention relates to the manufacture of boron trichloride from a molten salt bath comprising a naturally occurring boric acid salt or other boron-containing ore, carbon and chlorine gas.
In accordance with the process of this invention, boron trichloride is produced in a single stage reaction by passing chlorine gas through as continuously fed molten boric acid salt rich layer in a reactor vessel which contains carbon. At least a portion of the gaseous products of the reaction are recovered and partially condensed to separate at least a crude boron trichloride liquid phase from the non-condensable gaseous products. The crude boron trichloride liquid phase then is subjected to a two-stage distillation from which is recovered a purified boron trichloride product.

REFERENCES:
patent: 2876076 (1959-03-01), Montgomery et al.
patent: 3019089 (1962-01-01), O'Hara
patent: 3095271 (1963-06-01), McIntyre et al.
patent: 4024221 (1977-05-01), Becker et al.

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