3321.     ---------------.  [TAKENAKA, Y.]  Destructive Hydrogenation of Synthetic Petroleum.  II.  Effect of Reaction Conditions.  Jour. Soc. Chem. Ind. (Japan), vol. 46, 1943, pp. 658-662; Chem. Abs., vol. 43, 1949, p. 2415.

        Similar experiment was carried out by using 20% Mn(PO₄)₂ on kieselguhr as a catalyst and varying the initial pressure of H₂, reaction temperature, and time to find the optimum conditions for obtaining gasoline of high octane no.  Higher temperatures and less H₂ or a longer reaction time at a lower temperature yielded a high-octane gasoline.  By treating a fraction, boiling 200°-300°, with 2.8% H₂ under 44 atm. initial pressure 3 min. at 500°, gasoline having an octane no. of 75.4 was obtained.  Gasoline having a high octane no. can be obtained from oil rich in normal paraffins by proper treatment.

        ----------.  See abs. 2017, 2018.

        TAKEZAKI, Y.  See abs. 1894.

        TAKIGUSHI, K.  See abs. 1910.