2637. PHILLIPS PETROLEUM CO. Catalyst for Synthesis of Hydrocarbons. British Patent 669,831, 1952. Fuel Abs., 1952, abs. 4969.

Improved catalyst for the Fischer-Tropsch synthesis is prepared by reducing a mixture of ferroso ferric oxide, small amounts of K₂O and Al₂O₃ (which may be in the form of thermally decomposable salts) and 1-10 wt. % of CaO in an atmosphere of H₂ at 450°-550° to form metallic Fe in which is incorporated small amounts of K₂O and Al₂O₃ and 1.3-12 wt. % of CaO.