3421.     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.