2803.     REISINGER, -----.  Report on the Synol Synthesis.  TOM Reel 134, Rept. 283, May 2, 1941, 19 pp.

        In the examination of catalysts for the reaction, the fused Fe catalyst WK17, Leuna NH₃ catalyst, gave the best results; the Oxo fraction, 230°-350°, of the primary products contained 25-35%, by weight, of alcohols.  Fe precipitation catalysts with promoters were tried.  the most active of these was the Fe-Al type, which, with a specific total yield of 84.3 gm. per N m.³, gave 42.5% alcohol by weight, in the Oxo fraction.  Also worthy of note are the catalysts Fe-Mn and Fe-Ni.  The amount of promoter element should not exceed 1-3% for the best results.  Experiments on the influence of temperature on the course of the synthesis showed that a maximum alcohol yield only can be obtained at low temperatures, 200°-240°, and with low gas conversions, 40% contraction.  The chemical natures of the Fe catalyst primary products were determined by fractional distillation.  The alcohol concentrations were found to increase with rising temperature continuously up to a maximum at 100°-180°, C₄-C₇, with a concentration of 30% alcohol, then decrease fast to 11%, rising again to a maximum at 300°-320°, approximately C₁₅.  At still higher temperatures, virtually no alcohols were present.  During distillation of the primary product, the acids contained in the product esterify corresponding amounts of alcohol.  By deacidification of the products before the distillation starts, the alcohol contents in the fractions above 20° can be retained.  A comparison is given on the composition of products obtained by the 2 methods.  By heating the high-melting paraffins, 84° and more in air, varnishlike coatings of good qualities have been obtained.