What is Palladium monoxide?

Palladium monoxide is the asleep admixture of blueprint PdO. It is the alone able-bodied characterised oxide of palladium. It is able by alleviative the metal with oxygen. Above about 900 °C, the oxide reverts to Pd metal. It is not attacked by acids. As aegis is an apathetic metal, aegis oxide is difficult to aftermath and decomposes almost easily.
PdO is generally acquired as a ailing authentic actual that is generated for applications as a agitator (see Adams catalyst). Aegis oxide is able by heating aegis blot in oxygen at 350 °C.
Palladium monoxide is acquired as a atramentous powder. The oxide aswell may be able distinctively for catalytic use by heating abnormally a admixture of palladium chloride and potassium nitrate,
or the artefact of abandoning aegis in aqua regia, followed by the accession of sodium nitrate at 600 °C.A hydrated anatomy of the oxide (which dissolves in acid) can be able by precipitation from solution, for example, by hydrolysis of aegis nitrate or acknowledgment of a acrid aegis admixture with a able base. The amber hydrated oxide converts to atramentous anhydrous oxide on heating. Its susceptibility to advance by acids decreases at lower baptize content.
The hydrated oxide (hydroxide), PdO.nH2O can be produced as a dark-yellow accelerate by abacus acrid to a band-aid of aegis nitrate, Pd(NO3)2.
Applications
Materials called palladium oxide are useful catalysts for catalytic hydrogenation in organic synthesis.
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