798.    EIDUS, Y. T., ZELINSKIĬ, N. D., AND ERSHOV, N. I.  [Condensing Action of Methylene Radicals on Ethylene.]  Compt. Rend. Acad. Sci. U.R.S.S., vol. 60, 1948, pp. 599-601; Chem. Abs., vol. 43, 1949, p. 108.

                 In hydropolymerization of C2H4, the most important role is played by the CH2 radicals.  Using, as a source of CH2 radicals, molecules of CO in the course of hydrogenation, a new reaction of catalytic hydropolymerization of C2H4 was discovered, which proceeds only in the presence of small amounts of CO. With an equimolecular mixture of C2H4 and H2, containing 4-7% CO, and a space velocity 100 at 190 at atmospheric pressure, intensive hydropolymerization takes place on the catalyst surface; selection of the conditions may restrict hydrogenation of C2H4 to 25-30% of the total reaction.  The yields of liquid hydrocarbons reach 400-500 ml. per m.3 or 30-45 ml. per hr.  Distillation of a typical run showed the presence of 54% butylene, 4.1% butane, 19% propylene, 3.3% propane, 18.2% ethane, and 1.1% C2H4, in addition to which appreciable amounts (up to 60-65%) of C5-C8 hydrocarbons are formed.  Increase of the CO content 0.06-6.1% increases the amount of heavy oil (in ml. per m.3) O-61.3.  The light oil reaches a maximum of 193.5 ml. per m.3 at 4% CO, while gas oil (C4 and lower) reaches a maximum of 153.9 ml. per m.3 at 1.5% CO.  Complete absence of CO led to the failure of formation of any higher oil; only hydrogenation to C2H6 took place.