Croatica Chemica Acta, Vol. 78 No. 4, 2005.
Izvorni znanstveni članak
Precipitation of Uranium(VI) Peroxide (UO4) in Sodium Perchlorate Solution
Renata Djogić
Vlado Cuculić
Marko Branica
Sažetak
Precipitation diagrams were constructed using the data obtained in experiments with direct mixing of uranyl ion ([UO2]2+) and hydrogen peroxide. Three days after mixing the system, equilibrium was established in the [ H2O2]tot > [UO2]tot concentration region, resulting in stability of the concentration boundary. From this boundary condition, the solubility product (Ksp = [ UO2 2+] × [O2 2–]) was defined. The mean value of the solubility product was (1.32 ± 0.02) × 10–36 mol dm–3. From the solubility border, where equilibrium was established, i.e., at [UO2 2+] = 1.4 × 10–4 mol dm–3, the heterogeneous distribution diagrams of uranyl species, including the solid phase, were calculated.
Ključne riječi
uranyl ion; hydrogen peroxide; uranium(VI) peroxide; precipitation; solubility product
Hrčak ID:
2547
URI
Datum izdavanja:
20.12.2005.
Posjeta: 3.853 *