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Patent Abstracts

      1242.  ------.  [I. G. FARBENINDUSTRIE A. G.]  [Gaseous Catalytic Reactions.]  French Patent 638,109, July 22, 1927.  Chem. Abs., vol. 23, 1929, p. 247. 

            In catalytic reactions such as the synthesis of NH₃, the production of MeOH, and particularly the treatment of C by H₂ for the production of hydrocarbons, an irregular whirling movement is given to the contact materials by a current of gas entering the contact chamber.