2975. ----- [RUHRCHEMIE, A. G.] [Method for Reducing Catalysts.] German Patent Appl.--, R 407, filed Sept. 30, 1938. TOM Reel 37, bag 3,451, item 35, 2 pp.; Meyer Trans. PC—S—II, Fischer-Tropsch, vol. 4, chap. 134, 1949, p. 21.

In preparing catalysts for the conversion of CO with H₂ by the reduction at elevated temperatures of the metal oxide by means of H₂ or gases containing it, a reduction gas is used which contains, per m.³. < 205 gm. of CO and < 1gm. of H₂O vapor. By such means a shortening of the reduction time is made possible, or with the same reduction time, catalysts of higher catalytic activity are obtained.