3043.     SCHEFFER, F. E. C., DOKKUM, T., AND AL, J.  [Dissociation of Methane.]  Rec. trav. chim., vol. 45, 1926, pp. 803-816; Chem. Abs., vol. 21, 1927, p. 690.

        Continuous current method has been replaced by one of circulation of the gas.  Both C₂H₄ and CH₄ were used as a source of activated C obtained in the presence of Ni as a catalyst.  An account of the preparation of the gas and manner of carrying on experiments is outlined carefully.  The reaction was studied 480°-680°, since below these temperatures, C reacts with the Ni catalyst.  The substance formed is stable at 340°-420° and has an exothermic formation.  Mathematical deductions of the 2 equilibrium curves are given from data obtained at atmospheric pressure and different temperatures.