862.    FALCKE, V.  [Reaction Between Ferrous Oxide and Carbon and Between Carbon Monoxide and Iron.  I.]  Ber. Deut. Chem. Gesell., vol. 46, 1913, pp. 743-750; Jour. Soc. Chem. Ind., vol. 32, 1913, p. 365; Chem. Abs., vol. 7, 1913, p. 2525.

      The above reaction was studied to ascertain whether or not any difference could be detected between the various kinds of amorphous C, the method being to determine the equilibrium pressure.  Experiments showed that FeO prepared by heating FeC2O4 at 300 is not pure, and that gas is still given off after the solid has been heated to 700.  Addition of amorphous C has no effect on the pressure produced when FeO, containing 0.5% C, and Fe are heated together at 530-660; further, the reaction between FeO and CO is different when the CO is passed over the FeO and when the 2 are heated together in a closed vessel, in the 1st case much C being deposited, in the 2d none.  When the product obtained in the latter case is dissolved in HCl, no C is deposited, but much CO2 is evolved.