Chemistry:Molybdenum nitride
| Identifiers | |
|---|---|
3D model (JSmol)
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| Properties | |
| Mo2N | |
| Molar mass | 205.91 g·mol−1 |
| Appearance | Gray solid |
| Density | 9.06 g/cm3 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 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.[1] 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,[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]
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. doi:10.1016/j.jallcom.2022.166576. ISSN 0925-8388. https://www.sciencedirect.com/science/article/abs/pii/S092583882202967X.
- ↑ "Original Synthesis of Molybdenum Nitrides". ACS Publications. doi:10.1021/acs.chemmater.0c01369. https://pubs.acs.org/doi/10.1021/acs.chemmater.0c01369#:~:text=Nitrides%20Synthesis,of%205%20%C2%B0C%2Fmin..
- ↑ 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. Bibcode: 2001AppCA.219..141K. https://www.sciencedirect.com/science/article/abs/pii/S0926860X01006767.
| NH3 | He(N2)11 | ||||||||||||||||
| Li3N | Be3N2 | BN | β-C3N4 g-C3N4 |
N2 | NxOy | NF3 | Ne | ||||||||||
| Na3N | Mg3N2 | AlN | Si3N4 | PN P3N5 |
SxNy SN S4N4 |
NCl3 | Ar | ||||||||||
| K3N | Ca3N2 | ScN | TiN | VN | CrN Cr2N |
MnxNy | FexNy | CoN | Ni3N | CuN | Zn3N2 | GaN | Ge3N4 | As | Se | NBr3 | Kr |
| Rb3N | Sr3N2 | YN | ZrN | NbN | β-Mo2N | Tc | Ru | Rh | PdN | Ag3N | CdN | InN | Sn | Sb | Te | NI3 | Xe |
| Cs3N | Ba3N2 | Hf3N4 | TaN | WN | Re | Os | Ir | Pt | Au | Hg3N2 | TlN | Pb | BiN | Po | At | Rn | |
| Fr3N | Ra3N | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og | |
| ↓ | |||||||||||||||||
| La | CeN | Pr | Nd | Pm | Sm | Eu | GdN | Tb | Dy | Ho | Er | Tm | Yb | Lu | |||
| Ac | Th | Pa | UN | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr | |||
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