Molybdenum monophosphide is a binary inorganic compound of molybdenum metal and phosphorus with the chemical formula MoP.[1][2][3]

Preparation

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

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

Molybdenum monophosphide can be used as a catalyst.[8][9]

References

  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.