3972.  ----- [WOODRUFF, J. C., AND BLOOMFIELD, G.] Catalyst for Synthetic Methanol Production. United States Patent 1,625,924, Apr. 26, 1927; appl. filed May 26, 1926. Chem. Abs., vol. 21, 1927, p. 1993.

Zno, Cr oxide, or other difficultly reducible metal oxide is used together with an easily reducible oxide such as Cu, Ag, Fe, Ni, or Co oxides and with ZnCl₃, MgBr₂, or other metallic halide.