239.    ---------------.[ BERTHELOT, C.]  [Conversion of Methane Into Carbon Monoxide and Hydrogen.]  Rev. Chim. Ind. (Paris), vol. 48, 1939, pp. 194-198; Chem. Abs., vol. 33, 1939, p. 8562.

                  Review of various processes for the conversion of CH₄ into H₂ and C, CO, or CO₂ with special emphasis on a process involving the reaction of CH₄ with a mixture of O₂ and steam in the presence of active Ni, whereby CO (with some CO₂) and H₂ are formed.  In this latter process the CH₄ reacts mainly with the O₂.