Purification of boron nitride

Chemistry of inorganic compounds – Boron or compound thereof – Binary compound

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423292, 106 55, 264 82, 264101, C01B 2106

Patent

active

040899314

ABSTRACT:
Boron nitride (BN) is freed of boric oxide without increasing its electroconductivity by heating the BN under vacuum to evaporate the boric oxide and chlorinating the BN at a temperature sufficient to remove any elemental boron as boron trichloride.

REFERENCES:
patent: 3887687 (1975-06-01), Buford
patent: 3915742 (1975-10-01), Battles et al.

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