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      1193.  ------.[I. G. Farbenindustrie, A. G. Alcohols]  Catalytic Purification of Oxygen-Containing Hydrogenation Products of Carbon Oxides.  British Patent 400,262, Oct. 23, 1933.  Chem. Abs., vol. 28, 1934, p. 2136.

            O-containing products obtained by the catalytic hydrogenation of oxides of C, particularly the fraction boiling above 110º and consisting largely of higher alcohols, are purified by catalytic hydrogenation at 100º-300º and pressures above 50 atm. in presence of sulfides or nonreducible oxides of metals of groups 1, 2, 4, 5, 6, or 8, metals of group 6 being especially suitable.  The catalysts may be oxides, hydroxides, carbonates, and other salts from which the acid radical can be expelled by heat and complex salts of H₄SiO₄ or H₃PO₄ with H₂MoO₄ or H₂WO₄, such as NH₄ phosphomolybdate.  Among examples an initial fraction boiling at 120º-180º is (1) trickled over a catalyst filling consisting of pieces of Ni and W sulfides made by treating Ni tungstate with H₂S at 200º and 200 atm. of H₂ and (2) vaporized in H₂ and passed over Cu chromite at 180º and 200 atm.