526. ------. [DREYFUS, H.] [Formaldehyde.] French Patent 617,431, Feb. 19, 1927; appl. filed June 11, 1926. Chem. Zentralb., 1927, I, p. 2686.

Patent Abstracts

Gas mixtures containing CO and H₂ in nearly equimolecular amounts are passed at 200°-300°, at most 450°, and at 50-150 atm., at most 200 atm., over catalysts consisting of Zn, Cu, Al, Zn salts of these metals, as chromates or vanadates or products arising from the reduction of the corresponding metal oxides with H₂ or gases containing it. Catalysts favoring the formation of CH₄ even in traces should be avoided. By slow passage of the gas mixture through the reaction chamber considerable amounts of hydrocarbons and higher alcohols arise as by products.