426.    CANTELO, R. C.  Thermal Decomposition of Methane.  I.  Jour. Phys. Chem., vol. 28, 1924, pp. 1036-1048; Chem. Abs., vol. 19, 1925, p. 204.

                  Calculation of the equilibrium constant for the decomposition of CH₄ into C and H₂hows this reaction to be almost complete at 700°.  Various contact catalysts were, therefore, tried to hasten the formation of C black at this temperature.  Asbestos impregnated with Ni-Ni oxide was most effective.