Palladium(II) sulfate explained

Palladium(II) sulfate is an inorganic chemical compound with the formula PdSO₄. It is a hygroscopic red-brown solid that forms the dihydrate, PdSO₄·2H₂O.

Preparation and properties

Palladium(II) sulfate is produced by the reaction of palladium metal with a mixture of nitric acid and sulfuric acid. It can also be produced by the reaction of palladium(II) sulfide and oxygen in dimethylformamide.^{[1] [2] [3]}

When anhydrous palladium(II) sulfate absorbs moisture from the air, it forms a greenish-brown dihydrate. The anhydrous form can be regenerated by the heating of the dihydrate at 202 °C.

Anhydrous palladium(II) sulfate decomposes to palladium(II) oxide at 525 °C releasing sulfur trioxide:

Notes and References

1. Turki Alkathiri . Kai Xu . Bao Yue Zhang . Muhammad Waqas Khan . Azmira Jannat . Nitu Syed . Ahmed F. M. Almutairi . Nam Ha . Manal M. Y. A. Alsaif . Naresha Pillai . Zhong Li . Torben Daeneke . Jian Zhen Ou . 2D Palladium Sulphate for Visible-Light-Driven Optoelectronic Reversible Gas Sensing at Room Temperature . Small Science . 2022 . 2 . 3 . 10.1002/smsc.202100097 . en. free .
2. R. Eskenazi . J. Raskovan . R. Levitus . Sulphato complexes of palladium (II) . Journal of Inorganic and Nuclear Chemistry . 1966 . 28 . 2 . 521–526 . 10.1016/0022-1902(66)80333-0 . en.
3. W. Manchot . A. Waldmüller . Zur Kenntnis der Metall-Nitroso-Verbindungen: Über Stickoxyd-Verbindungen des Palladiums . Berichte der Deutschen Chemischen Gesellschaft . 1926 . 59 . 9 . 2363–2366 . 10.1002/cber.19260590931 . For knowledge of metal-nitroso compounds: About nitrogen oxide compounds of palladium . de.