Fe<sub>3</sub>Mo<sub>3</sub>N: Crystal Structure, High‐Temperature Behavior, and Catalytic Activity for Ammonia Decomposition
Sophie Hund, Oscar Gómez‐Cápiro, Kassiogé Dembélé, Stefan Berendts, Thomas Lunkenbein, Holger Ruland, Eva M. Heppke, Martin Lerch
Abstract
Abstract Fe 3 Mo 3 N was synthesized successfully via ammonolysis out of an oxidic precursor prepared by a modified Pechini route. Rietveld refinement using X‐ray powder data confirmed that the compound crystallizes in space group with a lattice parameter of a =11.0777 Å. Group theoretical methods were applied to elucidate the relation between the crystal structure of Fe 3 Mo 3 N and that of the copper type. The high temperature behavior of Fe 3 Mo 3 N in ammonia gas was investigated by in situ powder X‐ray diffraction. In addition, the catalytic activity of our iron molybdenum nitride for ammonia decomposition was measured and compared to the activity of an industrial iron‐based catalyst. Both catalysts show similar performances.