3163.     ---------------.  [SERGIENKO, S. R.]  [Catalytic Cyclization of Paraffinic Hydrocarbons.  II.  Investigation of the Reaction Products.]  Bull. acad. sci. U.R.S.S., classe sci. chim., 1941, pp. 191-200; U.O.P. Co. Survey Foreign Petroleum Literature, Transl. 373, 1943; Chem. Zentralb., 1942, I, p. 2219; Chem. Abs., vol. 37, 1943, p. 3065.

        Cyclization experiments were conducted at 475° with the catalysts Al₂O₃-Cr₂O₃-CoO and Cr₂O₃-CoO, the charge was the C₇, C₈, and C₉ fractions of synthin.  The products were at least 50% aromatic.  Cracked materials did not exceed 5-10% and unsaturates varied from 4-12%, depending on the catalyst used.

        ----------.  See abs. 1704.

        SERPEK, H. O.  See abs. 2785.