3229.     SNODGRASS, C. S., AND PERRIN, M.  Production of Fischer-Tropsch Coal Alcohol and Its Improvement by Cracking.  Jour. Inst. Petrol. Technol., vol. 24, No. 175, 1938, pp. 289-301; Petrol. Times, vol. 39, No. 1002, 1938, p. 395-397; Engineering, vol. 145, 1938, pp. 236-238; Gas Jour., vol. 221, 1938, p. 665; Colliery Guard., vol. 156, 1938, pp. 483-484; British Chem. Abs., 1938, B, p. 876; Chem. Abs., vol. 32, 1938, pp. 6447, 9441.

        Description of the Fischer-Tropsch process pointing out the paraffin-wax formation and the desirability of cracking this to improve the yield of motor fuel.  Fischer-Tropsch fuels are generally of poor octane number and difficult to crack.  Operation of a successful vapor phase process using a cycle gas system is described; flow sheets are presented and properties of the products are tabulated.  Motor fuels of octane Nos. 62-75 are produced.  It is impracticable to crack the Fischer-Tropsch gaseous product directly; separation from lean gas and steam must first be made by condensation.

        SNOWDEN, F. F.  See abs. 1214.