Atomistry » Thorium » Chemical Properties » Thorium Superoxide
Atomistry »
  Thorium »
    Chemical Properties »
      Thorium Superoxide »

Thorium Superoxide, Th2O7

Thorium Superoxide, Th2O7, is obtained in a hydrated form when ammonia is added to a mixture of thorium acetate or sulphate solution and hydrogen peroxide. This superoxide is rather unstable and easily loses some oxygen, so passing into more stable trioxide, ThO3. By the action of dilute sulphuric acid on the superoxide, Th2O7, hydrogen peroxide is formed in solution, whilst concentrated sulphuric acid yields ozonised oxygen. The superoxide Th2O7 is formed by the action of hypochlorite as well as hydrogen peroxide on Th(OH)4, and also by the electrolysis of an alkaline solution of sodium chloride in which thorium hydroxide, Th(OH)4, is suspended. It is therefore regarded by Pissarjewski as a true superoxide, and not merely an addition compound of Th(OH)4 and H2O2. Its formation from the nitrate is therefore thus represented:

Th(NO3)4 + 4HO2H = Th(O2H)4 + 4HNO3,

Th(O2H)4 being a salt of hydrogen peroxide, which is subsequently hydrolysed to Th(O2H)2(OH)2 and Th(O2H)(OH)3, a mixture of which constitutes Th2O7.

Last articles

Ca in 7TZ2
Ca in 7THO
Ca in 7TXR
Ca in 7TX9
Ca in 7TOW
Ca in 7TLN
Ca in 7TLI
Ca in 7TIN
Ca in 7THW
Ca in 7TI7
© Copyright 2008-2020 by atomistry.com
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy