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2 038 308

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IPC

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Application

4898148/26, 1991-01-02

(22)

Actual filing date

1991-01-02

(45)

Published

1995-06-27

(72)

Inventor

Smirnov I.V.Efremova T.I.Tsvetkov E.N.Kharitonov A.V.Antoshin A.Eh.

(73)

Holder

Nauchno-Proizvodstvennoe Ob"Edinenie Institut Im.V.G.Khlopina"

METHOD OF EXTRACTION OF RARE-EARTH AND/OR TRANSPLUTONIUM ELEMENTS FROM ACID MEDIA Russian patent published in 1995 - IPC

Abstract RU 2038308 C1

FIELD: analytical chemistry. SUBSTANCE: rare-earth and/or transplutonium elements were extracted from nitric acid solutions from liquid waste after nuclear fuel processing. Dihydroxydiphosphines of the formula where R1, R4 alkylaryl, R2, R3 H and/or alkyl were used as extractant. EFFECT: improved method of extraction. 2 tbl

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RU 2 038 308 C1

Authors

Smirnov I.V.

Efremova T.I.

Tsvetkov E.N.

Kharitonov A.V.

Antoshin A.Eh.

Dates

1995-06-27—Published

1991-01-02—Filed

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