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Molybdenum monophosphide

From Wikipedia - Reading time: 6 min
Molybdenum monophosphide
Names
IUPAC name
Phosphanylidynemolybdenum
Identifiers
3D model (JSmol)
ECHA InfoCard 100.032.090 Edit this at Wikidata
EC Number
  • 235-312-8
  • InChI=1S/Mo.P
    Key: AMWVZPDSWLOFKA-UHFFFAOYSA-N
  • [Mo]#P
Properties
MoP
Molar mass 126.92 g·mol−1
Appearance black crystals
Density 7.34 g/cm3
insoluble
Hazards
GHS labelling:
GHS07: Exclamation mark
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]

  1. ^ "Molybdenum Phosphide". American Elements. Retrieved 8 March 2024.
  2. ^ 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.
  3. ^ 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.
  4. ^ Conrad, Ulrich (1935). Die Elektrolyse von Molybdänsäure in Phosphatschmelzen (in German). Technische Hochschule zu Breslau. p. 13. Retrieved 8 March 2024.
  5. ^ 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.
  6. ^ 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.
  7. ^ "mp-219: MoP (Hexagonal, P-6m2, 187)". Materials Project. Retrieved 8 March 2024.
  8. ^ 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.
  9. ^ 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.
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