956.    ---------------.  [FISCHER, F.]   [Development of the Benzine Synthesis From Carbon Monoxide and Hydrogen at Atmospheric Pressure.]  Brennstoff-Chem., vol. 11, 1930, pp. 489-500; Ges. Abhandl. Kenntnis Kohle, vol. 10, 1932, pp. 501-533; Chem. Abs., vol. 25, 1931, p. 796.

     Motor benzine, colorless, S-free, and requiring no further refining, has been prepared on a semicommercial scale from industrial-gas mixtures, containing CO and H₂, in a train of apparatus consisting of purifiers, heaters, contact units, etc.  Gas liquefaction has been increased from 20 to 50% with a Co-Cu-Th catalyst, and the possible use of a cheaper Ni catalyst is indicated.  From 1 m.³ of a mixture of CO-H₂-C₂H₂, prepared by incomplete combustion of CH₄ and O₂, as much as 100 cc. benzine and 50 cc. oil have been obtained.  The apparatus is shown schematically and detailed drawings are given of a number of the various designs of contact units employed in the tests.  Questions involved in commercial utilization of the process with reference to necessary costs and feasible mixtures of coal, water, fuel, producer, and blast-furnace gases for use in the synthesis are discussed.  A boiling-point composition curve for the benzine is given, together with a bibliography for 1926 to date.