Synthesis, characterization, and catalytic testing of η‐carbide‐type phases in the system Fe–Co–Mo–N

Key Points

• The aim is to synthesize and test the catalytic properties of different phases in the Fe–Co–Mo–N system.
• Synthetic methods were employed to create five phases of Fe3–xCoxMo3N.
• Characterization was done using energy-dispersive X-ray spectroscopy, hot gas extraction analyses, and X-ray diffraction.
• Catalytic activity for ammonia decomposition was assessed and compared among the synthesized phases.
• Co3Mo3N and Fe3Mo3N demonstrated higher catalytic activity compared to the solid solutions.
• The characterization techniques confirmed the composition and structure of the synthesized phases.