Plutonium(III) phosphate
Chemical compound
From Wikipedia, the free encyclopedia
Plutonium(III) phosphate is an inorganic compound of plutonium, with the molecular formula PuPO4.[1] It is the trivalent plutonium salt of phosphoric acid.
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| Identifiers | |
|---|---|
3D model (JSmol) |
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| Properties | |
| PuPO4 | |
| Molar mass | 339 g·mol−1 |
| Appearance | Dark violet to green depending on hydration and form |
| Insoluble | |
| Structure | |
| Monazite | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation
Heating a mixture of plutonium dioxide and diammonium phosphate to 1000°C for 12 hours produces polycrystalline plutonium phosphate.[1]
- 2 PuO2 + 2 (NH4)2HPO4 → 2 PuPO4 + 4 NH3 + 3 H2O + 1/2 O2
Heating the product to 1100°C produces plutonium dioxide and phosphorus pentoxide.[3]
Reacting plutonium(IV) nitrate with disodium phosphate produces PuP2O7 which is decomposed to plutonium phosphate when heated to 600°C for 6 hours in an argon/hydrogen atmosphere.[2]
- Pu(NO3)4 + 2 Na2HPO4 → PuP2O7 + 4 NaNO3 + H2O
- 4 PuP2O7 → 4 PuPO4 + 2 P2O5 + O2
- 2 PuP2O7 + H2 → 2 PuPO4 + P2O5 + H2O
Reacting plutonium(III) fluoride with boron phosphate also produces plutonium phosphate.[4]
- PuF3 + BPO4 → PuPO4 + BF3
Properties
Plutonium phosphate crystalizes in the monazite crystal structure.[1]
It does not dissolve in water.[5]