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Patent Abstracts

      304.     ------.  [CARBO-NORIT-UNION  VERWALTUNGS-G.  M.  B.  H.]  [Purifying Gaseous Mixtures.]  French Patent 849,527, Nov. 25, 1939.  Chem. Abs., vol. 35, 1941, p. 7073.

Method for preparing gaseous mixtures destined to be used for the catalytic synthesis of organic compounds or NH3 consists in subjecting the mixtures 1st to a treatment with active C at ordinary temperature and then to a treatment at a temperature above 200º with substances acting catalytically such as the composition “Luata” (containing Fe oxide.)