2546.     ---------------.  [OTA, N.]  Water Gas by the Reaction of Methane and Carbon Dioxide.  II.  Methods of Preventing Carbon Formation on the Catalyst.  Jour. Soc. Chem. Ind. (Japan), vol. 45, 1942, pp. 284-290; Chem. Abs., vol. 43, 1949, p. 1944.

        Formation of C on catalysts can be prevented not only by selecting a suitable catalyst but by (a) elevating the reaction temperature, (b) taking excess CO₂, or (c) adding H₂O to the reacting gas.  Thus, when 30% excess CO₂ is used with the CH₄, the reaction proceeds smoothly at 800° with a Ni-kieselguhr catalyst without any other admixture.  Similar results were obtained with a gas having 30% H₂O (based on CH₄) at 700° or 10% H₂O at 800°.  By adding H₂O, the amount of CH₄ decomposed is increased.

        OTTO, K. V.  See abs. 1206.

        OTTS, K.  See abs. 2740.

        OWENS, M. L.  See abs. 2094.

        PACE, B. S.  See abs. 810.