2008.    KUMMER, J. T., BROWNING, L. C., AND EMMETT, P. H.  Thermodynamic Calculations Concerning the Possible Participation of the Carbides of Iron as Intermediate in Fischer-Tropsch Synthesis.  Jour. Chem. Phys., vol. 16, No. 7, 1948, pp. 739-740; Chem. Abs., vol. 42, 1948, p. 6623.

      It is concluded from thermodynamic considerations that neither n-mono-olefins nor the higher n-paraffins can be formed from CO and H₂ by reduction of the bulk or the hexagonal Fe₂C or Fe₃C by H₂.  It is indicated, however, that the lower normal paraffins with n as high as 6 could, as far as thermodynamic limitations are concerned, be formed under Fischer-Tropsch synthesis conditions by reduction of bulk Fe₂C by H₂.