Molybdenum nitride (Mo2N) is a binary
inorganic compound composed of
molybdenum and
nitrogen. It belongs to the family of
transition metal nitrides and exhibits properties that make it useful in applications such as a
catalyst and a coating material.
Properties
Mo2N typically exists in multiple crystalline forms, including hexagonal (hcp) and cubic (fcc) structures.[1] Its properties can vary depending on factors such as synthesis method,
stoichiometry, and
crystal structure. General properties of molybdenum nitride include:
Catalysis in various chemical reactions, including
ammonia synthesis and hydrodeoxygenation reactions
Mechanical hardness and wear resistance, making it suitable for coating applications
Synthesis
Molybdenum nitride can be synthesized through various methods,[2][3] including:
Direct nitridation: Molybdenum metal can react with nitrogen gas at elevated temperatures to form Mo2N.
Ammonolysis: Molybdenum precursors, such as molybdenum oxides or molybdates, can be treated with ammonia gas or ammonia-containing solutions to produce molybdenum nitride.
Chemical vapor deposition: Molybdenum nitride thin films and coatings can be deposited onto substrates using CVD techniques, such as thermal CVD or plasma-enhanced CVD.
Applications
Molybdenum nitride is utilized as a catalyst in various industrial processes, including ammonia synthesis. Molybdenum nitride exhibits
catalytic activity in the
Haber-Bosch process for
ammonia synthesis, where it serves as an alternative to conventional iron-based catalysts.[4]