219.    ---------------. [ERTHELOT, C.] [Cost of Hydrogen Necessary for Manufacture of Synthetic Gasoline.]  Chim. et Ind., vol. 34, 1935, p. 815.

                  Average cost of H₂ from water gas used in the synthesis of gasoline amounts, at 30 centimes/m.³, to 600 or 1,200 francs/ton of gasoline, depending upon the process used – Bergius or Fischer-Tropsch.  Thus, the cost of the necessary H₂ is more than the cost of natural gasoline.  By carbonizing coal at 900°-920°, 300 m.³ of a gas containing 72-74% H₂ can be recovered/ton treated.  The cost of a 95% H₂ from this source is much less than that from water gas.  Abstract of a paper presented at the XVth Congres de Chimie Industrielle.