2971.     ---------------.  [RUHRCHEMIE, A.-G.]  [Olefin Synthesis by Water-Gas Circulation on Cobalt-Mixture Catalyst.]  FIAT Reel L-5, Apr. 29, 1941, frames 118-135; PB 70,159; TOM Reel 299.

        Synthesis operation was carried out in a double-tube furnace to obtain products with a high % of olefins.  According to calculations, 1 m.³ of water gas was needed to circulate for each 10 m.³ of Co catalyst mixture; however, the quantity had to be increased to 1.2 m.³ during the operation.  The results of the synthesis, as obtained under normal conditions in a range of temperature 190°-225°, a gas pressure of 7 atm., and a catalyst life of 6 mo., are as follows:  CO+H₂ conversion 63%; yield of liquid products 88-90 gm. per m.³ of water gas; 52 wt. % benzine; 25, oil; 17, soft paraffin; 6, hard paraffin; olefins in benzine, 58-60 vol. % and in oil 42 vol. %.