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.