806.    ---------------.  [EISENHUT, O., AND KAUPP, E.]  [Röntgenographic Researches on Iron Catalysts for Ammonia Synthesis.]  Ztschr. Physik. Chem., vol. 133, 1928, pp. 456-471; Chem. Abs., vol. 22, 1928, p. 3073.

     Debye-Scherrer method of powder analysis was used for synthetic NH₃ catalysts, which were prepared according to the patent of the Badische Anilin & Soda-Fabrik (German 249,447, abs. 86), and from complex Fe salts KAlFe (CN)₆+χKCl.  All of these showed principally pure a-Fe, independently of the method of formation or use.  The Badische Anilin u. Soda-Fabrik catalyst consisted primarily of Fe₃O₄ in the beginning.  The catalyst from the complex salts after reduction also contained Fe₂N, Fe₃C, C, etc. in small quantities.

     EISENSTECKEN, F.  See abs. 3051.

     ELAGINA, N. V.  See abs. 790, 796, 804.

     ELDER, J. L.  See abs. 740.