1966. KÖRBER, F., WIEMER, H., AND FISCHER, W. A. [Thermal Disintegration of CO on Fe and Its Alloys and in Mixtures With Carbon.] Arch. Eisenhüttenw., vol. 17, 1943, pp. 43-52; Chem. Abs., vol. 38, 1944, p. 5769.

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Literature Abstracts

Catalytic bodies of pure Fe cause a stronger disintegration of CO at about 900° which, however, if compared with the equilibrium concentrations of Boudouard’s curve, cannot be ascribed to catalytic effects but probably to chemical reactions between the Fe and CO. Admixtures of graphite up to 1.5% do not affect this action of soft-Fe basic bodies. If, however, the basic body contains cementite a very pronounced maximum of CO₂ formation is observed between 500° and 600° at 0.4% C as cementite. This maximum is equal or even higher than the value for soft Fe around 900° depending on the quality of basic body, and can be observed, though weaker, even at lower cementite contents. Increasing the cementite content increases the maximum value between 500° and 600°, while at 900° it becomes smaller and is hardly noticeable at 1.2-1.5% C. Steel has much less disintegrating action on CO than powdered basic catalytic bodies. Magnetic measurements showed that in passing CO over Fe powder up to 500° the latter is transformed entirely into cementite; the velocity of the transformation depends on the fineness of the Fe powder. Simultaneous formation of higher carbides or any other oxides could not be observed at this temperature.