PATENT

3289 ----- [SCHMIDT, O, AND UFER, J.].  (Badisch Anilin-u. Soda-Fabrik)  Methanol.  British Patent 229,715, Mar. 26, 1925; appl. filed Aug. 23, 1923.  Ind. Eng. Chem., vol. 17, 1925, pp. 981-982; Chem. Zentralb., 1926, I. p. 2508; Chem. Abs., vol. 19, 1925, p. 3093.

Oxides of C are caused to react with H₂ under the action of heat and pressure in  the presence of a catalyst comprising at least one of the “hydrogenating” elements Cu, Ag, Au, Zn, Cd, and Pb, associated with one or more of the elements Ti, V, Ce, Mn, Zr, Ce, Th, Cb, Ta, Mo, W, U, or B or their compounds.  The catalysts should be free from alkali metals and from Fe, Ni, and Co.  In using mixtures of  Zn with oxides of Cr, Mn, Mo, Ti, or Ce, the gaseous mixture must contain a greater volume of H₂ than of C oxides, and this condition is also desirable when other catalysts are used.  The catalyst may be prepared by treating a carrier, such as asbestos, with salts of the catalytic metals, such as a boiling solution of Cu nitrate and Cr acetate and then with Na₂CO₃ filtering, washing drying and reducing with H₂.  several other examples of  catalysts are also given.  In making MeOH, temperatures of 220°-260°, pressures of 35-150 atm., and gas velocities of 1-250 m.³ (calculated on atmospheric pressure per hour for each kgm. of catalyst) are used.

See also British Patents 229,714 (abs. 91) and 228,959 (abs. 90).