3973.  ----- [WOODRUFF, J. C., AND BLOOMFIELD, G.] Catalyst for Synthetic Methanol Production. United States Patent 1,625,925, Apr. 26, 1927; appl. May 26, 1926. Chem. Abs., vol. 21, 1927, p. 1993.

Difficultly reducible group 2 metal oxides are used, such as ZnO and MgO, together with difficultly reducible metal oxides from the 3d to 7^th groups, for example, Cr oxide and a metallic halide such as ZnCl₂.