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.