1067.    ---------------.  [FOSTER, A. L.] Fischer-Tropsch Synthesis May Prove a Major Oil-Refining Process.  III.  Catalysts and Their Preparation.  Oil Gas Jour., vol. 43, No. 18, 1944, pp. 66, 69, 91; Chem. Abs., vol. 39, 1945, p. 3895.

       Usual main constituent of the catalyst is 1 or more group VIII metals mixed, if desired, with 1 or more of a wide range of promoters.  The catalyst is usually prepared by reduction of a salt or an oxide of the metal, and may be supported on any one of a number of suitable materials – for example, kieselguhr.  The precise methods used in preparing the catalyst are critical, since its physical state is as important as its chemical nature.