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In one group, including M 2 UO 4 (M=Li, Na, K) and MUO 4 (M=Ca, Sr) there are six additional oxygen atoms. Taking calcium uranate, CaUO 4 , as an example, the six oxygen atoms are arranged as a flattened octahedron , flattened along the 3-fold symmetry axis of the octahedron which also runs through the O-U-O axis (local point group D 3d at the ...
Sodium diuranate, also known as the yellow oxide of uranium, is an inorganic chemical compound with the chemical formula Na 2 U 2 O 7. It is a sodium salt of a diuranate anion. It forms a hexahydrate Na 2 U 2 O 7 ·6H 2 O. Sodium diuranate is commonly referred to by the initials SDU. [1] Along with ammonium diuranate it was a component in early ...
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Uranyl nitrate is important for nuclear reprocessing.It is the compound of uranium that results from dissolving the decladded spent nuclear fuel rods or yellowcake in nitric acid, for further separation and preparation of uranium hexafluoride for isotope separation for preparing of enriched uranium.
2 + 4 HF → UF 4 + 2 H 2 O (500 °C, endothermic) UF 4 + F 2 → UF 6 (350 °C, endothermic) The resulting UF 6, a white solid, is highly reactive (by fluorination), easily sublimes (emitting a vapor that behaves as a nearly ideal gas), and is the most volatile compound of uranium known to exist. [6] One method of preparing uranium ...
Magnesium diuranate (MgU 2 O 7) is a compound of uranium. [1] It is known in the uranium refining industry as "MDU" and forms the major part of some yellowcake mixtures. Yellowcakes are an intermediate product in the uranium refining process. To produce this form of yellowcake, crushed ore is mixed with hot water to a 58% solids slurry.
1% and 2% uranyl acetate solutions are used as an indicator, and a titrant in stronger concentrations in analytical chemistry, as it forms an insoluble salt with sodium (the vast majority of sodium salts are water-soluble). Uranyl acetate solutions show evidence of being sensitive to light, especially UV, and will precipitate if exposed.
Uranyl peroxide or uranium peroxide hydrate (UO 4 ·nH 2 O) 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.