3737. [ TETER, J.W.] (Sinclair Refining Co.). Method of Reactivating Reduced Metal Oxide Catalysts. United States Patent 2,500,776, Mar.14, 1950; appl. filed Oct. 12, 1944, Serial No. 558,483; 2 claims (Cl. 252-411). Chem. Abs., vol. 44, 1950, p. 4607.

PATENT

3737. [ TETER, J.W.] (Sinclair Refining Co.). Method of Reactivating Reduced Metal Oxide Catalysts. United States Patent 2,500,776, Mar.14, 1950; appl. filed Oct. 12, 1944, Serial No. 558,483; 2 claims (Cl. 252-411). Chem. Abs., vol. 44, 1950, p. 4607.

Reduced Co or Ni oxide catalyst can be reactivated after use in reaction of ammonia with olefins at 450° -750° F. and 500-3,000 p.s.i. with H₂ at 450° -750° F. and 1,000-3,000 p.s.i. The N-containing tarry deposit is converted to volatilized hydrocarbons and ammonia. The catalyst can be purged of H₂ by passing ammonia over it. 12 United States patents cited.