| Identifiers | |
|---|---|
| 3D model (JSmol) | |
| CompTox Dashboard (EPA) | |
InChI
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SMILES
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| Properties | |
| Chemical formula | Mo2N |
| Molar mass | 205.91 g·mol |
| Appearance | Gray solid |
| Density | 9.06 g/cm |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references | |
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. Its properties can vary depending on factors such as synthesis method, stoichiometry, and crystal structure. General properties of molybdenum nitride include:
- High melting point
- Good thermal stability
- High electrical conductivity
- 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, 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.
References
- Jauberteau, Isabelle; Bessaudou, Annie; Mayet, Richard; Cornette, Julie; Jauberteau, Jean Louis; Carles, Pierre; Merle-Méjean, Thérèse (December 2015). "Molybdenum Nitride Films". Coatings. 5 (4): 656–687. doi:10.3390/coatings5040656.
- Lilić, Aleksandra; Cardenas, Luis; Mesbah, Adel; Bonjour, Erik; Jame, Patrick; Michel, Carine; Loridant, Stéphane; Perret, Noémie (30 November 2022). "Guidelines for the synthesis of molybdenum nitride: Understanding the mechanism and the control of crystallographic phase and nitrogen content". Journal of Alloys and Compounds. 924: 166576. doi:10.1016/j.jallcom.2022.166576. ISSN 0925-8388.
- "Original Synthesis of Molybdenum Nitrides". ACS Publications. doi:10.1021/acs.chemmater.0c01369. S2CID 219739192.
- Kojima, Ryoichi; Aika, Ken-Ichi (2001). "Molybdenum nitride and carbide catalysts for ammonia synthesis". Applied Catalysis A: General. 219 (1–2): 141–147. doi:10.1016/S0926-860X(01)00676-7.
| Molybdenum compounds | |
|---|---|
| Mo(0) | |
| Mo(II) | |
| Mo(III) | |
| Mo(IV) | |
| Mo(V) | |
| Mo(VI) | |
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