837.    ENGLEHARDT, A.  [Recovery and Chemical Utilization of Gaseous Hydrocarbons From Fuel Beneficiation and Motor-Fuel Synthesis.]  Internat. Cong. Pure Appl. Chem., 10th Conf., Rome, 1938; Brennstoff-Chem., vol. 19, 1938, pp. 297-304; Chem. Abs., vol. 32, 1938, p. 9444.

     Address deals with the sources and relative amounts of gaseous hydrocarbons, methods of their recovery, and possibilities of utilization.  Because of the short contact time in the benzine synthesis of Fischer-Tropsch, olefinic hydrocarbons are formed.  After recycle over the catalyst, the composition of the synthesis gases in volume % is as follows:  CO2, 29; N2, 15; H2, 22; CO, 14.4; CH4, 16; C2H4, 0.6; CnH2n, 1.5-1.8; CnH2n+2, 1.7-2.1.  Changing the reaction conditions might, naturally, yield a gas of different composition.  In general the gaseous hydrocarbons with 2 or more C atoms make up 15-20% of the liquid product; their complete utilization is therefore greatly desired, particularly since they are wholly free from S impurities.

      ENGLEHARDT, F.  See abs. 1947, 1951, 1952, 1953, 1953a, 1955.