1890.  KOBOZEV, N. I., AND KLYACHKO-GURVICH, L. L. [Regenerating the Iron Catalyst for the Synthesis of Ammonia.] Russian Patent 56,324, Jan. 31, 1940. Chem. Abs., vol. 35, 1941, p. 6402.

Spent catalyst is treated with Fe carbonyl at temperatures high enough for the decomposition of carbonyl to metal and CO to form an active layer.

KOCH, H. See abs. 671, 709.

KODAMA, S. See abs. 1866, 1868, 1869, 1870, 1871, 1872, 1874, 1875, 3706, 3707.