3647.     WELLER, S., HOFER, L. J. E., AND ANDERSON, R. B.  Role of Bulk Cobalt Carbide in the Fischer-Tropsch Synthesis.  Jour. Am. Chem. Soc., vol. 70, 1948, pp. 799-801; Chem. Abs., vol. 42, 1948, p. 3550.

        Evidence is presented that for Co catalysts, bulk Co carbide is neither an intermediate in the Fischer-Tropsch synthesis nor a catalytically active substrate for the synthesis:  (1) The presence of extensive amounts of carbide in Co catalysts severely inhibits the Fischer-Tropsch synthesis; (2) used catalysts show no carbide by X-ray analysis, but samples carbided before synthesis show carbide to be present after synthesis; (3) the low-temperature unstable cubic Co produced by reduction of Co catalysts is not converted to hexagonal Co during the synthesis, although carbiding and subsequent hydrogenation of a reduced catalyst always result in this conversion.

        WELLS, C.  See abs. 3158.