Method of separating yttrium ions

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Rare earth metal

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423DIG14, 75101BE, C01F 1700

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042017475

ABSTRACT:
Yttrium ions are selectively separated by extracting the yttrium ions by contacting an aqueous solution containing hydroxyethyl ethylenediaminetriacetic acid, yttrium ions and lanthanide ions with an extracting solvent containing tributyl phosphate and an acid phosphoric ester having the formula ##STR1## wherein R.sup.1 represents hydrogen atom or an alkyl group having the formula ##STR2## wherein n is an integer of 6 to 15 and m is n-1 or n-2; and R.sup.2 represents an alkyl group having the formula ##STR3## wherein n is an integer of 6 to 15 and m is n-1 or n-2.

REFERENCES:
patent: 3575687 (1971-04-01), Drobnick et al.
patent: 3578391 (1971-05-01), Chiola et al.
patent: 3598520 (1971-08-01), Chiola et al.
patent: 3615173 (1971-10-01), Wignet et al.
patent: 4104358 (1978-08-01), Minagawa et al.
Hardes et al., "J. of Inorganic & Nuclear Chem.," vol. 11, 1959, pp. 197-209.

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