PATENTS

      1653.  ------.  [INTERNATIONAL HYDROCARBON SYNTHESIS CO.]  [Catalytic Hydrogenation of Carbon Monoxide.]  French Patent 862,870.  Mar. 18, 1941. Chem. Zentralb., 1941, II. p. 2279: Chem. Abs., vol. 42, 1948. p. 9124.

            Small pieces of Fe having 2 dimensions above 1-2 mm., preferably about 5 mm., and the 3d dimension 0.1 mm. are heated in an oxidizing atmosphere at 700º-800º and then heated at 500º in a reducing atmosphere.  This material is an approved catalyst for hydrogenation of CO.  Halides, phosphates, and borates of Na, Li, K, or Cs (0.1-10%), Al₂O₃, SiO₂, compounds of Cu, Ti, Mn, W, Mo, Cr, Th, etc. may be added.