3492.     ---------------.  [TSUTSUMI, S.]  Catalysts for the Synthesis of Liquid Hydrocarbons From Carbon Monoxide and Hydrogen.  VII.  Activities of the Catalysts Used for the Synthesis.  Sci. Papers Inst. Phys. Chem. Research (Tokyo), vol. 36, 1939, pp. 262-270; Chem. Abs., vol. 34, 1940, p. 314.

        Addition of 0.2-0.3 gm. of NiSO4 to a Ni-10% Al2O3-100% kieselguhr catalyst, prepared by precipitation, containing 6 gm. of Ni, almost completely suppressed its activity for the CO-H2 reaction, but did not greatly affect its activity for the hydrogenation of C6H6, for the suppression of which 0.8-0.9 gm. of NiSO4 was required.  A catalyst containing 0.8-0.9 gm. of NiSO4 retained its activity for the hydrogenation of nitrobenzene to aniline and of phorone to valerone, and for the water-gas reaction. When the catalysts were prepared by roasting, less NiSO4 was required to suppress the activity for the hydrogenation of C6H6, 0.2-0.3 gm. for Ni (6 gm.)-10% Al2O3, and 0.04-0.05 gm. for Ni (6 gm.).  It is inferred that the reaction of CO with H2 is catalyzed by the most active spots, whereas the hydrogenation of C6H6 and the other reactions are accelerated by respectively less-active spots.