PATENT

3403.  [SOCIÉTÉ D’ÉTUDES MINIÈRES ET INDUSTRIELLES.]  Nitrides and Ammonia.  British Patent 245,762, Jan. 8, 1925.  Chem. Abs., vol. 21, 1927, p. 304.

Nitrides of metals such as Fe, Co Ni, W, and Mo are prepared by heating the metal in a N₂ containing gas at ordinary or low pressure in the presence of N compounds of Li.  NH₃ is synthesized by passing a mixture of N₂ and H₂ at atmospheric or other pressure and at 550°-600° over a mixture of a metal of the Fe group, a N compound of Li. and an oxide of a metal of Al group.