1205.    GLUUD, W., AND SCHÖNFELDER, R.  [Increasing the Activity of Iron (Ammonia) Catalysts.]  Ber. Gesell, Kohlentech., vol. 3, 1930, pp. 96-99; Chem. Abs., vol. 25, 1931, p. 3779.

       Catalyst containing Fe is treated with CO to form Fe₂C, which is then reduced by H₂.