991.    ---------------.  [FISCHER, F., AND MEYER, K.]  [Reducibility of Standard Nickel Catalyst.]  Brennstoff-Chem., vol. 14, 1933, pp. 64-67; Ges. Abhandl. Kenntnis Kohle, vol. 11, 1934, pp. 549-554; Chem. Abs., vol. 27, 1933, p. 4034.

                 Reduction temperature of Ni-Mn-Al catalyst cannot be lowered by the addition of Cu in preparation or afterward as CuO or CuCO₃.  Activity is, however, decreased by the former and increased by the latter method.  CO-H₂ or 1:3 CO₂-H₂ mixtures cannot be used in place of H₂ for catalyst reduction, whereas, 3:7 and 7:3 N₂-H₂ mixtures at 450° give normal activity.