French
DeutschMolybdenum monophosphide
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| Names | |
|---|---|
| IUPAC name Phosphanylidynemolybdenum | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.032.090 |
| EC Number |
|
PubChem CID | |
CompTox Dashboard (EPA) | |
| |
| |
| Properties | |
| MoP | |
| Molar mass | 126.92 g·mol−1 |
| Appearance | black crystals |
| Density | 7.34 g/cm3 |
| insoluble | |
| Hazards | |
| GHS labelling: | |
 | |
| Warning | |
| H319, H335 | |
| P261, P280, P304, P305, P338, P340, P351, P405, P501 | |
| Related compounds | |
Related compounds | Trimolybdenum phosphide, molybdenum diphosphide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Molybdenum monophosphide is a binary inorganic compound of molybdenum metal and phosphorus with the chemical formula MoP.[1][2][3]
Preparation
[edit]Molybdenum monophosphide can be obtained from electrolysis of molten molybdenum hexametaphosphate:[4]
- 4 Mo(PO3)6 → 4 MoP + 10 P2O5 + 9 O2
It can also be prepared from heating of a mixture of molybdenum and metaphosphoric acid in a carbon crucible:
- 2 Mo + 2 HPO3 + 5 C → 2 MoP + 5 CO + H2O
Other reactions are known too.[5][6]
Properties
[edit]Molybdenum monophosphide forms black crystals of hexagonal crystal system with space group P6m2.[7] It is insoluble in water. Molybdenum monophosphide decomposes when heated in air:
- 4 MoP + 11 O2 → 4 MoO3 + 2 P2O5
Uses
[edit]Molybdenum monophosphide can be used as a catalyst.[8][9]
References
[edit]- ^ "Molybdenum Phosphide". American Elements. Retrieved 8 March 2024.
- ^ Toxic Substances Control Act (TCSA) Chemical Substance Inventory: Cumulative Supplement to the Original Inventory. User Guide and Indices. U.S. Environment Protection Agency, Office of Toxic Substances. 1980. p. 14. Retrieved 8 March 2024.
- ^ Lide, David R. (29 June 2004). CRC Handbook of Chemistry and Physics, 85th Edition. CRC Press. p. 4-70. ISBN 978-0-8493-0485-9. Retrieved 8 March 2024.
- ^ Conrad, Ulrich (1935). Die Elektrolyse von Molybdänsäure in Phosphatschmelzen (in German). Technische Hochschule zu Breslau. p. 13. Retrieved 8 March 2024.
- ^ Yao, Z. W.; Wang, Li; Dong, Haitao (3 April 2009). "A new approach to the synthesis of molybdenum phosphide via internal oxidation and reduction route". Journal of Alloys and Compounds. 473 (1): L10–L12. doi:10.1016/j.jallcom.2008.05.048. ISSN 0925-8388. Retrieved 8 March 2024.
- ^ Hui, Ge; Xingchen, Liu; Shanmin, Wang; Tao, Yang; Xiaodong, Wen (8 February 2017). Innovative Applications of Mo(W)-Based Catalysts in the Petroleum and Chemical Industry: Emerging Research and Opportunities: Emerging Research and Opportunities. IGI Global. p. 66. ISBN 978-1-5225-2275-1. Retrieved 8 March 2024.
- ^ "mp-219: MoP (Hexagonal, P-6m2, 187)". Materials Project. Retrieved 8 March 2024.
- ^ Xiao, Peng; Sk, Mahasin Alam; Thia, Larissa; Ge, Xiaoming; Lim, Rern Jern; Wang, Jing-Yuan; Lim, Kok Hwa; Wang, Xin (18 July 2014). "Molybdenum phosphide as an efficient electrocatalyst for the hydrogen evolution reaction". Energy & Environmental Science. 7 (8): 2624–2629. doi:10.1039/C4EE00957F. hdl:10356/103094. ISSN 1754-5706. Retrieved 8 March 2024.
- ^ Issues in Chemical Engineering and other Chemistry Specialties: 2011 Edition. ScholarlyEditions. 9 January 2012. p. 560. ISBN 978-1-4649-6354-4. Retrieved 8 March 2024.