The Influence of Potassium Promotion on the Structural Properties of Cobalt Molybdenum Nitrides in Ammonia Synthesis

Cobalt molybdenum nitrides are one of the most promising ammonia-synthesis catalysts future. However, selection optimal promoter composition is a challenging task. In this paper, structure–property relationship ternary cobalt as ammonia synthesis promoted with potassium was studied. A series containing 0.2–3.5 wt% analyzed by means X-ray diffraction, volumetric gas adsorption, and activity tests in synthesis. The were subjected to thermal aging same catalytical reactor. influence on thermostability determined. observed loss high content related concentration Co2Mo3N Co3Mo3N phases, mean crystallite sizes, specific surface area, pore size distribution.