Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Uranyl peroxide or uranium peroxide hydrate (UO4·nH2O) is a pale-yellow, soluble peroxide of uranium. It is found to be present at one stage of the enriched uranium fuel cycle and in yellowcake prepared via the in situ leaching and resin ion exchange system. This compound, also expressed as UO3·(H2O2)·(H2O), is very similar to uranium trioxide hydrate UO3·nH2O. The dissolution behaviour of both compounds are very sensitive to the hydration state (n can vary between 0 and 4). One main characteristic of uranium peroxide is that it consists of small needles with an average AMAD of about 1.1 μm.
The uranyl minerals studtite, UO4·4H2O, and metastudtite, UO4·2H2O, are the only minerals discovered to date found to contain peroxide. The product is a light yellow powder.
Uranylperoxide or uranium peroxide hydrate (UO4·nH2O) is a pale-yellow, soluble peroxide of uranium. It is found to be present at one stage of the enriched...
compounds identified in yellowcakes include uranyl hydroxide, uranyl sulfate, sodium para-uranate, and uranylperoxide, along with various uranium oxides. Modern...
uranium oxide also leads to the formation of metastudtite, a more stable uranylperoxide, often found in the surface of spent nuclear fuel exposed to water...
Despite their apparent chemical simplicity, these two uranyl species are the only reported peroxide minerals. They may also be readily formed on the surface...
Uranyl oxalate (UO2C2O4) is a pale yellow powdered uranyl salt. It is often encountered in industrial nuclear processes at both the front and back-end...
method has previously been demonstrated on the thermal treatment of uranylperoxide powders, which yield distinctive yellow to brown hues. Hence, this...
uranium(VI) state and is known to form compounds such as uranyl carbonate, uranyl chloride and uranyl sulfate. UO2+ 2 also forms complexes with various organic...
uranium(VI) state and is known to form compounds such as uranyl carbonate, uranyl chloride and uranyl sulfate. UO2+ 2 also forms complexes with various organic...
linear "uranyl" group, UO2+ 2. Between 4 and 6 ligands can be accommodated in an equatorial plane perpendicular to the uranyl group. The uranyl group acts...
chromate potassium dichromate Chromates react with hydrogen peroxide, giving products in which peroxide, O2− 2, replaces one or more oxygen atoms. In acid solution...
K[Cr(NH3)2(NCS)4] reacts in the near-UV region although it is thermally unstable. Uranyl oxalate has been used historically but is very toxic and cumbersome to analyze...
(lead-specific), the CA1-3 DNAzymes (copper-specific), the 39E DNAzyme (uranyl-specific) and the NaA43 DNAzyme (sodium-specific). The NaA43 DNAzyme, which...
Oxycations are rarer, some examples being nitrosonium (NO+), vanadyl (VO2+), and uranyl (UO2+2). Of course many compounds are known with both oxides and other groups...
the individual metal centre with a polyatomic complex, as shown by the uranyl ion example. If an ion contains unpaired electrons, it is called a radical...
(lead-specific), the CA1-3 DNAzymes (copper-specific), the 39E DNAzyme (uranyl-specific) and the NaA43 DNAzyme (sodium-specific). Calmodulin is an example...
they found that they could precipitate it by adding hydrogen peroxide to a dilute uranyl nitrate solution. They were then able to get the process to work...
article discussing the deterioration of oxalic acid in the presence of uranyl salts under illumination, while in 1913, Landau published an article explaining...
BTBP to form a 1:1 complex, where the axial sites are occupied with the uranyl oxygen atoms. The BTBPs are also able to bind to cyclopentadienyl complexes...
No. no longer in use) Uranyl nitrate hexahydrate solution (UN No. no longer in use) UN 2981 7 (UN No. no longer in use) Uranyl nitrate, solid (UN No....
(9 and 10 ed) is not controversial. Dmisteinbergite (feldspar, 9.EG.15), uranyl sorovanadates (4.HD. ids) and silica family (4.DA. ids) are some exceptions...
chromates) and fission products (e.g. pertechnetate and periodate anions, uranyl and neptunyl cations). Absorption of neutrons in hydrogen nuclei leads to...