2083. LUTHER, M., AND JOCHHEIM, M. (I. G. Farbenindustrie A. G.). Separation of Components of Oily Mixtures Produced by the Catalytic Hydrogenation of Carbon Oxides. United States Patent 1,704,751, Mar. 12, 1929; appl. filed Feb. 3, 1927. Chem. Abs., vol. 23, 1929, p. 1907.

Alcohols may be readily isolated from the mixtures by converting them into aldehydes by dehydrogenation, separating the aldehydes by distillation or combination with bisulfite, and thereafter reconverting them into alcohols, or the alcohols may be oxidized to acids and separation of the acids effected. Alternatively, the material may be treated with partly or wholly dehydrated hydrate-forming salts, such as MgCl₂, Ca(NO₃)₂, or CaCl₂, whereby, on cooling, preferably with addition of a precipating agent, such as benzine, molecular compounds separate, which are subsequently decomposed by addition of H₂O. Products are thus obtained which are of lighter color, lower boiling point, and more agreeable odor than the original material. Inorganic acids may be used for recovery of ketones in the oily mixtures under treatment, suitably by washing on the countercurrent plan. Gives several examples, with details of procedure.