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Molybdenum carbide

Summary

Molybdenum carbide is an extremely hard, refractory, ceramic material, commercially used in tool bits for cutting tools.

Molybdenum carbide
Identifiers
  • MoC: 12011-97-1
  • Mo2C: 12069-89-5 checkY
3D model (JSmol)
  • MoC: Interactive image
  • Mo2C: Interactive image
ChemSpider
  • Mo2C: 9162545
ECHA InfoCard 100.031.414 Edit this at Wikidata
EC Number
  • MoC: 234-569-3
  • Mo2C: 235-115-7
  • MoC: 71623305
  • Mo2C: 10987348
  • DTXSID10923231 Edit this at Wikidata
  • MoC: InChI=1S/C.Mo
  • Mo2C: InChI=1S/C.2Mo
  • MoC: [C]=[Mo]
  • Mo2C: C(=[Mo])=[Mo]
Properties
MoC and Mo2C
Molar mass 107,961 g/mol (MoC) and 203,911 g/mol (Mo2C)
Density 8.90 g/cm3
Melting point 2,687 °C (4,869 °F; 2,960 K)
Related compounds
Related Refractory ceramic materials
 Niobium carbide, tantalum carbide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

There are at least three reported phases of molybdenum carbide: γ-MoC, β-Mo2C, and γ'. The γ phase is structurally identical to tungsten carbide.[1]

β-Mo2C has been suggested as a catalyst for carbon dioxide hydrogenation.[2] The γ' phase forms by combining the elements at relatively low temperatures, and transforms to the γ phase at 800 °C.[3]

References edit

  1. ^ "Molybdenum Carbide Mo2C, ESPI Metals". Archived from the original on 21 July 2018. Retrieved 1 November 2016.
  2. ^ Zhou, Hui; Chen, Zixuan; Kountoupi, Evgenia; Tsoukalou, Athanasia; Abdala, Paula M.; Florian, Pierre; Fedorov, Alexey; Müller, Christoph R. (2021-09-17). "Two-dimensional molybdenum carbide 2D-Mo2C as a superior catalyst for CO2 hydrogenation". Nature Communications. 12 (1). Springer Science and Business Media LLC: 5510. Bibcode:2021NatCo..12.5510Z. doi:10.1038/s41467-021-25784-0. ISSN 2041-1723. PMC 8448824. PMID 34535647.
  3. ^ KuO, K.; HÄGG, G. (1952). "A New Molybdenum Carbide". Nature. 170 (4319). Springer Science and Business Media LLC: 245–246. Bibcode:1952Natur.170..245K. doi:10.1038/170245a0. ISSN 0028-0836. S2CID 4161374.