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Literature Abstracts

       53a.   SHULTZ, J. F., SELIGMAN, B., SHAW, L., AND ANDERSON, R. B.  Fischer-Tropsch Synthesis.  XI.  Effect of Nitriding on 3 Types of Iron Catalysts.  Ind. Eng. Chem., vol. 44, 1952, pp. 397-401; Chem. Abs., vol. 46, 1952, p. 5,291.

                Fe catalysts of the fused, sintered, and precipitated types were tested in the Fischer-Tropsch synthesis after reduction in H₂ and nitriding in NH₃ to an e-phase nitride, and the selectivity and activity of the nitrides were compared with those of corresponding reduced or inducted catalysts.  In all cases, the nitrided catalysts yielded products of lower average molecular weight than those from reduced or inducted catalysts.  The activity of fused and sintered catalysts was increased by nitriding, whereas the average activity of the precipitated catalyst was relatively independent of the method of pretreatment.