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Patent Abstracts

      1204.  ------.  [I. G. FARBENINDUSTRIE A. G.]  [Conversion of Carbon Monoxide With Hydrogen.]  German Patent Appl. I 63,810, OZ 11,356, no date, APC TC 1,222.

            For the synthesis of hydrocarbons from CO and H2 in a plurality of stages, the fresh charge gas is contacted in the first stage with a catalyst that has suffered appreciable loss in activity by use in a succeeding stage.