2622. ------. [PATART, G.] [Synthesis of Higher Aliphatic Alcohols and Their Separation.] French Patent 598,447, Apr. 9, 1925. British Chem. Abs., B, 1927, p. 347.

Catalysts for reduction of CO or CO₂ by H₂ under pressure at higher temperatures consist of an intimate mixture of alkali or alkaline-earth oxides with other metallic oxides. For example, ZnO is mixed with K chromate or MnO₂ with neutral B or tungstate, the mixture pasted with 10% of a 10-20% dextrin solution, granulated, and dried at <320°. Suitable gas mixture contains 50 vol. H₂:40 vol. CO. During the reduction, performed at 330°-400°, the CO₂ and CH₄ formed are removed by refrigeration under high pressure. The liquid product separates into 2 layers which can be further separated. The main fraction (about 60%) consists of PrOH, BuOH, and AmOH, higher alcohols are also formed.