2024. ------. [LAZIER, W. A.] (E. I. du Pont de Nemours & Co.). Catalyst for Hydrogenation Reactions. United States Patent 1,746,782, Feb. 11, 1930; appl. filed June 12, 1926, Serial No. 115,692. Chem. Abs., vol. 24, 1930, p. 1649.

In the process of United States Patent 1,746,781 (abs. 2023) a chromite catalyst is used, prepared by calcining at a red heat a sexivalent Cr salt containing a hydrogenating metal, for example, Zn chromate.