SEM results of Pd/AC spent

Palladium oxide

Palladium oxide is known by the following synonyms:

  • palladium oxide
  • palladium(II) oxide

The oxidation number of palladium in palladium oxide is 2.

  • Formula: PdO
  • Hill system formula: O1Pd1
  • CAS registry number: [1314-08-5]
  • Formula weight: 122.419
  • Class: oxide
  • Colour: black or green-black
  • Appearance: crystalline solid
  • Melting point: 750°C (decomposes)
  • Boiling point:
  • Density: 8300 kg m-3


Not available

Solid state structure

  • Geometry of palladium: 4 coordinate: square planar
  • Prototypical structure:

Element analysis

Element percentages in palladium oxide
Pd 86.93

Isotope pattern for PdO

THe chart below shows the calculated isotope pattern for the formula PdO with the most intense ion set to 100%.


Coming soon...


The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

  • R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
  • N.N. Greenwood and A. Earnshaw in, 2nd edition, Butterworth, UK, 1997.
  • F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in, John Wiley & Sons, 1999.
  • A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
  • R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
  • A.R.West in, John Wiley & Sons, 1999.
  • A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
  • J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
  • D.R. Lide, (ed.) in, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
  • J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
  • J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.
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