3428.     ---------------.  [TRAMBOUZE, Y., AND PERRIN, M.]  Effect of the Chemical Composition of Fischer Catalysts and Their Constituents on the Synthesis Activity.  Jour. Chem. Phys., vol. 47, 1950, pp. 474-482; Chem. Abs., vol. 44, 1950, p. 9783.

        Ni-Al₂O₃-kieselguhr catalyst was shown to contain Ni aluminate and Ni silicate after being heat-treated to 450°.  The aluminate is active in synthesizing higher hydrocarbons; the silicate forms CH₄ primarily.  The distance between the Ni atoms in these 2 compounds is believed to be the factor responsible for the specificity of their catalytic properties.