785.    EIDUS, Y. T.  [Investigation of Catalysts for Hydrogenation of Carbon Monoxide by Simultaneous Application of the Dynamic and Static Methods.  III.  The Part Played by the Alkaline Activator in the Formation of the Surface of the Catalyst Fe-Cu-ThO2-K2CO3-Kieselguhr.]  Bull. Acad. Sci. U.R.S.S., Classe Sci. Chim., No. 1, 1945, pp. 62-70; U.O.P. Co. Survey Foreign Petroleum Literature Transl. 537; Chem. Abs., vol. 39, 1945, p. 4792.

     Catalyst Fe-Cu-ThO2-K2CO3-kieselguhr, composed in the proportion of 100:25:2:2:125, was investigated for the reaction of hydrogenation of CO2; 4 catalysts made up of various components of this catalyst were likewise studied for their interaction with CO2 at 258.  It was found that no catalytic hydrogenation of CO2 takes place under the conditions used.  Data were obtained showing that the interaction of CO2 with the surface of the catalyst is due to K2CO3 and that addition of ThO2 promotes this process.  The alkaline activating agent, while contained in only slight amount in the catalyst, accumulates on the surface of the latter and occupies a substantial portion of its active part.  The accumulation of the activator on the surface of the catalyst is the cause of the activity of the latter with respect to carbide formation, hydrogenation of CO and interaction of CO2 with the catalytic surface.