1031. HERBERT, W., SCHALL, A., AND GROSS, H. W. (Metallgesellschaft A. -G.). [Catalyst for Hydrogenation of Carbon Monoxide.] German Patent 736,977, July 6, 1943; appl. filed July 24, 1938 (Cl. 12 o-1.03). Chem. Abs., vol. 38, 1944, p. 3786.

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Patent Abstracts

1031. HERBERT, W., SCHALL, A., AND GROSS, H. W. (Metallgesellschaft A. -G.). [Catalyst for Hydrogenation of Carbon Monoxide.] German Patent 736,977, July 6, 1943; appl. filed July 24, 1938 (Cl. 12 o-1.03). Chem. Abs., vol. 38, 1944, p. 3786.

Fe nitrate mixed with diatomaceous earth and small quantity of a metal that activates nitrates is heated. Simultaneously air is passed in so that part of the N₂ is driven off. Then the Fe is reduced with gases containing H₂ at a temperature < 300°. The reduction is carried to such and extent the only 5-10% of the theoretically reducible Fe is actually reduced to the metallic state.