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Patent Abstracts

      1216.  ------.  [I. G. FARBENINDUSTRIE A. G.]  Cracking Hydrocarbons Such as Methane.  British Patent 264,845, Jan. 20, 1926.  Chem. Abs., vol. 22, 1928, p. 242. 

            Cracking of CH₄ to produce C₂H₂ or cracking of other gaseous or vaporous saturated hydrocarbons is effected by passage, alone or diluted with other gases, through a thin zone of high temperature, which extends across substantially the whole cross-sectional area of a tube, as in a special apparatus described.  The reaction products may be directly subjected to other chemical treatment to produce other products such as H₆H₆ or AcH.  Residual gases containing H₂ and CO may be converted catalytically into CH₄, which may be used to continue the process.  A W wire gauze carrying platinized asbestos in a this layer may be used as a catalyst, or a highly porous refractory material such as “Marquardt composition” may be used as a catalyst.