Iron(II) molybdate

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Iron(II) molybdate
Names
IUPAC name
Iron(II) molybdate
Identifiers
3D model (
JSmol
)
  • InChI=1S/Fe.Mo.4O/q+2;;;;2*-1
    Key: QQOCLJJWXLOEJE-UHFFFAOYSA-N
  • [O-][Mo](=O)(=O)[O-].[Fe+2]
Properties
FeMoO4
Molar mass 215.78 g/mol
Appearance Tan brown powder or crystals [1]
Density 5.6 g/cm3 (20 °C)
Melting point 1,115 °C (2,039 °F; 1,388 K)
0.00766 g/100 mL (20 °C)
0.038 g/100 mL (100 °C)
Thermochemistry
118.5 J/mol K
Std enthalpy of
formation
(ΔfH⦵298)
 -1075 KJ/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Iron(II) molybdate is an inorganic compound with the chemical formula FeMoO4.[2]

Synthesis

Iron(II) molybdate is prepared by the reaction of iron(II) chloride or iron(II) sulfate[3] and sodium molybdate.

Na2MoO4 + FeSO4 → Na2SO4 + FeMoO4
Na2MoO4 + FeCl2 → 2 NaCl + FeMoO4

Due to its very low aqueous solubility, iron(II) molybdate precipitates out as a brown powder from the above reactions, which can then be obtained by filtration.

Applications

FeMoO4 has been used as relatively stable active material for

catalyst for oxygen evolution in alkaline solutions.[5]

Safety

Iron(II) molybdate is toxic and may cause irritation. It should not be released into the environment. Inhalation of dusts should be avoided.

References

  1. ^ "Iron(II) Molybdate". American Elements. Archived from the original on 2023-01-17. Retrieved 2023-01-17.
  2. ^ University of Akron Chemical Database[permanent dead link]
  3. ^
    PMID 24863794
    .
  4. ISSN 2050-7496
    .
  5. doi:10.1016/j.ijhydene.2008.06.008
    .
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