1435. ---------------. [HOFER, L. J. E.] Introduction to the Carbides of Iron and Their Physical and Chemical Properties. Bureau of Mines Tech. Paper 718, 1949, pp. 1-15.

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Literature Abstracts

Introduction to the main report by Pichler and Merkel, entitled “Chemical and Thermomagnetic Studies on Iron Catalysts for the Synthesis of Hydrocarbons.” Presents a comprehensive, annotated literature review with critical comments on present-day knowledge concerning Fe carbides, their types, formation, and properties, with special reference to their application to the carbide theory on the production of hydrocarbons by the hydrogenation of CO over Fe catalysts. Special consideration is given to the conditions of formation and the identification of 2 new Fe₂C carbides – the carbides (I) and (II) of Pichler and Merkel, the former having the Curie point at 265° and the latter at 380° identifiable with the hexagonal, close-packed Fe carbide of Halle and Herbst. Appendixes A-D present the evidence in the form of translations of laboratory memoranda on the discovery of the Halle and Herbst carbide. Recent investigations at the Bureau of Mines indicate that carbide (I) is identical with the Hägg carbide.

See abs. 47, 52, 54, 586, 3297, 3647.