820.    EMMETT, P. H.  Studies on the Mechanism of Ammonia Synthesis Over Iron Catalysts.  Jour. Chem. Education, vol. 7, 1930, pp. 2571-2583; Chem. Abs., vol. 25, 1931, p. 453.

     Résumé of all published work on the mechanism of catalytic synthesis of NH₃ and on the effect of promoters on the activity of Fe catalysts.