PATENTS

      1443.  ------.  [I. G. FARBENINDUSTRIE, A. G.]  [Process for Reducing Carbon Monoxide With Hydrogen.]  German Patent Appl. -, filed Mar. 23, 1944.  TOM Reel 26, item 11. frames 596-502.  Meyer Transl.  PC-S-II, Fischer-Tropsch, vol. 1, chap. 67, 1948. p. 171.

            Describes a process for producing high-molecular hydrocarbons, especially paraffins, by reduction of CO with H₂ in presence of Fe catalysts.  Fe, Fe oxide, or Fe compounds or substances containing them, convertible into the oxide at increased temperatures, are heated in the presence of metals of groups 2, 3, 6, or 7.  Their oxides or compounds are converted into the oxides in nonreducing, preferably oxidizing atmosphere >600º, but below the melting point of the metals or metal compounds themselves, until sintering takes place and the material is eventually reduced.  To the basic catalyst mass is added a metal such as Ag or Cu capable of facilitating the reduction.  Such catalysts have the advantage of being active at temperature <220º and produce high-boiling paraffins.  Furthermore they have a high mechanical stability.