430.    ---------------.[CANTELO, R. C.]  Methane Equilibrium.  III.  Jour. Phys. Chem., vol. 31, 1927, pp. 246-250; Chem. Abs., vol. 21, 1927, p. 1583.

                  In the catalytic decomposition of C₂H₄ the catalyst most effective is a specially prepared Ni-Ni oxide; at 300° and higher, CH₄ is present in the products, the % of CH₄ increasing with the temperature.  C₂H₆ is stable up to 360° in the presence of a Ni catalyst.  Equilibrium constants for the CH₄ equilibrium at 500°-770° were obtained by repeatedly circulating the products of the catalytic decomposition of C₂H₄ over the Ni catalyst, which are in general agreement with those obtained by other investigators.