Đogić, Renata; Cuculić, Vlado; Branica, Marko
Precipitation of uranium(VI) peroxide (UO4) in sodium perchlorate solution.
Croatica Chemica Acta, 78
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 (K-sp = [UO22+] [O-2(2-)]) was defined. The mean value of the solubility product was (1.32 +/- 0.02) x 10(-36) mol dm(-3). From the solubility border, where equilibrium was established i.e., at [UO22+] = 1.4 x 10(-4) mol dm(-3), the heterogeneous distribution diagrams of uranyl species, including the solid phase, were calculated.
||uranyl ion; hydrogen peroxide; uranium(VI) peroxide; precipitation; solubility product; nuclear-fuel; dissolution; radiolysis; water; H2O2
||NATURAL SCIENCES > Chemistry
||Division for Marine and Enviromental Research
|Project title||Project leader||Project code||Project type|
|Fizikalna i biogeo-kemija tragova metala u vodenim sustavima||Ivanka Pižeta||0098121||MZOS|
||31 Oct 2013 10:21
||14 Feb 2014 15:40
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