Ammonium plutonate uranate, its preparation process and its use

Details Ammonium plutonate uranate, its preparation process and its use Ammonium plutonate uranate, its preparation process and its use

1988-08-12

1989-06-13

Terapane, John F.

Chemistry of inorganic compounds

Radioactive

Transuranium compound

423261, 423 15, 252643, 204 15, C01G 5600, C01G 43025, C25C 122, G21C 362

Patent

active

048391492

ABSTRACT:
The invention relates to an ammonium plutonate uranate, its preparation process and its use for producing the mixed oxide (U,Pu)O.sub.2.
The ammonium plutonate uranate of formula [Cu,Pu)O.sub.3 ].sub.2 [NH.sub.3 ].sub.x [H.sub.2 O].sub.y in which x and y have a value from 0 to 5 with x+y=5, is prepared by neutralization with ammonia of an aqueous solution of uranium VI and plutonium VI salts, e.g. uranyl and plutonyl nitrates. This solution can be prepared by oxidizing a solution of plutonium IV and uranyl nitrate. By calcining under a reducing atmosphere the ammonium plutonate uranate precipitate formed, a mixed oxide (U,Pu)O.sub.2 is obtained having a solubility in 11N HN O.sub.3 without fluoride of at least 99.9%.

REFERENCES:
patent: 3287279 (1966-11-01), Lyon
patent: 3310386 (1967-03-01), Lloyd
patent: 4235740 (1980-11-01), Druckenbrodt et al.
patent: 4397778 (1983-08-01), Lloyd
patent: 4439279 (1984-03-01), Herrmann et al.
patent: 4565672 (1986-01-01), Schneider et al.
patent: 4749519 (1988-06-01), Koehly et al.

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