3422.     ---------------.  [TRAMBOUZE, Y.]  [Chemical Changes in Fischer Catalysts During Their Preparation.]  Compt. rend., vol. 227, 1948, pp. 971-972; Chem. Abs., vol. 43, 1949, p. 2853.

        Catalysts were prepared by several methods, and the chemical nature of the Ni was determined by extraction with NH₄OH, with HNO₃ and by fusion.  Before reduction, Ni generally is found in 3 forms:  The free, oxide or combined with the CO₃ ion, hydroaluminate, and hydrosilicate of Ni.