2532.     ORLOV, G.  [Preparation of Ethylene From Carbon Monoxide and Hydrogen.]  Ber. deut. chem. Gesell., vol. 42, 1909, pp. 893-895; Jour. Russian Phys.-Chem. Soc., vol. 40, 1908, pp. 1588-1590; Chem. Zentralb., 1909, I, p. 735; Chem. Abs., vol. 3, 1909, p. 1400.

        Coke, in pieces the size of hazelnuts, was soaked in Ni(NO3)2, dried, and ignited.  It was then treated in the same manner with PdCl2 and was finally reduced in a Cu tube by means of MeOH vapor.  When a mixture of H2 and CO is placed over the prepared coke at 95°-100°, the issuing gas consists of CO, H2C2H4, and air; CH4 is not formed.  When CO2 is substituted for CO, neither C2H4 nor CH4 is obtained, but at higher temperatures, or in contact with reduced Ni alone, both of these gases are produced.