1007.    ---------------.  [Conversion of Carbon Monoxide and Carbon Dioxide Into Methane at High Pressures.]  Ges. Abhandl. Kenntnis Kohle, vol. 11, 1934, pp. 386-389; Chem. Zentralb., 1934, II, p. 1062; Chem. Abs., vol. 29, 1934, p. 6565.

        It has been previously shown (abs. 1005) that at high pressures the equilibrium CH₄+CO₂=2CO+2H₂ is displaced toward the left by increasing the temperature.  The reduction of CO at 700° and 70-80 atm., even without a catalyst, was studied experimentally.  A Mo catalyst was most satisfactory of those used.  With a Ag catalyst considerable C₂H₆ was produced.  Even CO₂ was reduced to CH₄ at 600° and 300 atm. without a catalyst.  Magnesite thoroughly treated with H₂ yielded C₂H₆ in addition to CH₄.