217. ------. [BRAUNKOHLE-BENZIN, A. G.] [Catalyst Pretreatment.] German Patent Appl. B 182,020, filed Feb. 19, 1938 (Cl. IV d-126). PB REPT. 412, May 15, 1945.

Patent Abstracts

217. ------. [BRAUNKOHLE-BENZIN, A. G.] [Catalyst Pretreatment.] German Patent Appl. B 182,020, filed Feb. 19, 1938 (Cl. IV d-126). PB REPT. 412, May 15, 1945.

Pretreating a synthesis catalyst with synthesis gas containing NH₃ for about 20 min, at 185º C. Longer catalyst life results.