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69850 Sigma-Aldrich

Molybdenum(VI) oxide

puriss. p.a., 99.5%

Synonym: Molybdenum trioxide

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, I-N, Puriss p.a., Materials Science,
InChI Key   JKQOBWVOAYFWKG-UHFFFAOYSA-N
Quality Level   200
grade   puriss. p.a.
assay   99.5%
mp   795 °C (lit.)
anion traces   chloride (Cl-): ≤20 mg/kg
  sulfate (SO42-): ≤50 mg/kg
cation traces   Ca: ≤20 mg/kg
  Cd: ≤10 mg/kg
  Co: ≤20 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤20 mg/kg
  K: ≤50 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤10 mg/kg
  NH4+: ≤50 mg/kg
  Na: ≤50 mg/kg
  Ni: ≤20 mg/kg
  Pb: ≤20 mg/kg
  Zn: ≤20 mg/kg

Description

General description

Molybdenum(VI) oxide (MoO3) is an acidic metal(VI) oxide. It is widely employed in selective oxidation reactions. Its temperature-programmed reduction has been reported. Kinetics and mechanism of its reduction in the presence of hydrogen, propene, butene-1 and CO has been investigated. It is reduced to metal upon reaction with hydrogen at high temperatures.

Application

Molybdenum(VI) oxide (MoO3) has been used as a starting material for the deposition of Mo (Molybdenum) over the MgO-330 and MgO-500 supports by employing methanol as solvent.

Precursor to LAMOX fast ion conductors and superconductors.

Used in the solid state synthesis of a remarkable ternary, reduced molybdenum oxide, Pr4Mo9O18, whose structure contains previously unknown Mo7, Mo13 and Mo19 clusters. The new cluster product is a small band gap semiconductor.

Safety & Documentation

Safety Information

Symbol 
Signal word 
Warning
Hazard statements 
Precautionary statements 
RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
QA4725000

Documents

Certificate of Analysis (COA)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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