PATENT

3757. -----. [ TROÍTSKIÍ, K.V.]  [Catalyst for Synthesis of Ammonia.]  Russian Patent 42,060, Mar. 31, 1935.  Chem. Zentralb., 1935, II, p. 3961; Chem. Abs., vol. 30, 1936, p. 8538.

Fe or magnetite, together with an activator, is melted in a stream of O₂.  A powder prepared in the same way is added to the melt just before solidification.