2028. ------. [LAZIER, W. A.] (E. I. du Pont de Nemours & Co.). Catalysts Suitable for Use in Hydrogenation Reactions. United States Patent 2,066,153, Dec. 29, 1936. Chem. Abs., vol. 31, 1937, p. 1172.

PATENTS

2028. ------. [LAZIER, W. A.] (E. I. du Pont de Nemours & Co.). Catalysts Suitable for Use in Hydrogenation Reactions. United States Patent 2,066,153, Dec. 29, 1936. Chem. Abs., vol. 31, 1937, p. 1172.

Catalyst is prepared by precipitating from an aqueous medium with a chromate of a N base, such as (NH₄)₂CrO₄, a mixture of metal chromates, such as those of Zn, Cu, and Cd, at least one of which is a chromate of a hydrogenating metal, the oxide of which, when exposed for several hr. in the pure state to the action of H₂ at 400°, will remain substantially in the oxide form, and another of which is a chromate of a metal, the oxide of which, when likewise treated with H₂, will be reduced substantially to the metal, and the mixture of metal chromates is converted into one containing the corresponding metal chromates. Various details and examples given.