1036.    FISCHER, F., PICHLER, H., AND DIENST, W.  [Approach to Theoretically Possible Yields in the Fischer-Pichler.  Intermediate-Pressure Synthesis.]   Brennstoff-Chem., vol. 20, 1939, pp. 221-228; British Chem. Abs., 1939, B, p. 904; Chem. Abs., vol. 34, 1940, p. 3904.

        Synthesis was effected in two stages at 175°-205° under 10 atm., with a Co-ThO₂-kieselguhr catalyst; products condensable at room temperature were removed after the 1^st stage.  2 reaction tubes (internal diam. 10 mm. length of catalyst column 50 cm.) were used in parallel in the 1^st stage, and a single similar tube was used in the 2d.  The reaction tubes, arranged vertically, were heated by circulating hot H₂O, under pressure, through surrounding jackets.  With a throughput of 2 l. of gas, CO+2H₂ per gm. of Co per hr., the maximum yield was 140-150 gm. of product, wax 14, liquid hydrocarbons 73, gasol 13% per m.³ of inert-free gas; with a throughput of 0.2 l. per gm. of Co per hr. the maximum yield was 190 gm. of product, wax 48, liquid hydrocarbons 44, gasol 8% per m.³ of gas; the latter yield represents 90% of the theoretical.  A decrease in the rate of gas throughput necessitates a lowering of the reaction temperature to obtain the maximum yield of hydrocarbons; at the same time there is an increase in the relative proportion of higher-boiling hydrocarbons in the product.  The reaction mechanism is discussed.

                    FISCHER, F., PICHLER, H., AND KÖBEL, H.  [Mixed Gas for Benzine Synthesis.  II.  Semitechnical Investigation of the Preparation of Mixed Gas for Benzine Synthesis by Simultaneous Conversion of Coke-Oven Gas and Steam Over Coke in the Generator.]  See abs. 1040.

        FISCHER, F., PICHLER, H., AND KÖBEL, H.  [Mixed Gas for Benzine Synthesis.  III.  Preparation of Mixed Gas for Benzine Synthesis by Simultaneous Conversion of Coke-Oven Gas and Steam Over Coke in the Generator.]  See abs. 1041.