839. GRASSHOF, H. (I. G. Farbenindustrie A. G. “In Auflösung”). [Separation of Alcohols From Carbon Monoxide Hydrogenation Products.] German Patent 811,348, Aug. 20, 1951 (Cl. 12 o-501). Chem. Abs., vol. 47, 1953, p. 5666.

Patent Abstracts

839. GRASSHOF, H. (I. G. Farbenindustrie A. G. “In Auflösung”). [Separation of Alcohols From Carbon Monoxide Hydrogenation Products.] German Patent 811,348, Aug. 20, 1951 (Cl. 12 o-5₀₁). Chem. Abs., vol. 47, 1953, p. 5666.

MeOH and higher alcohols, especially iso-BuOH, are separated from the crude products resulting from the hydrogenation of CO by extraction with a solvent boiling below MeOH in which MeOH is poorly soluble, for example, pentane, amylene, or their mixtures, followed by washing the extract with 70-90% aqueous MeOH and distillation.

See abs. 3436, 3437, 3438.