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Title:
【発明の名称】抽出剤としての(ビス)アリール-ジチオホスフィン酸および相乗剤としての有機燐酸塩を用いて少なくとも3価のランタニド類から3価のアクチニド類を分離する方法
Document Type and Number:
Japanese Patent JP2001516809
Kind Code:
A
Abstract:
The invention relates to a method for separating trivalent actinides from at least trivalent lanthanides, whereby said trivalent actinides are extracted from an aqueous solution containing a H<+> concentration of 0.01 to 2 mol/1 by using an (aryl)dithiophosphonic acid of the general formula (4) = R1R2PS(SH), in which R1 = phenyl or naphthyl, R2 = phenyl or naphthyl, as well as rests of R1 and R2 substituted by methyl, ethyl, propyl, isopropyl, cyano, nitro or halogenyl, with addition of trioctylphosphate, tris-(2-propypentyl)-phosphate or tris-(2-ethylhexyl)-phosphate as synergist. The use of synergists according to the invention allows for a more selective extraction. In a more advantageous formulation, the aromatic solvent used is at least one component from the toluol, xylol, tert.-(butyl)-benzol, bis-(tert.-butyl)-benzol, bis-(tert.-butyl)-benzol, tris-(tert.-butyl)-benzol, bis-isopropylbenzol and tri-isopropylbenzol, resulting in increased selectivity An(III) and distribution coefficient DAn(III).

Inventors:
Modro Giuseppe
Odoi Reinhardt
Application Number:
JP2000511923A
Publication Date:
October 02, 2001
Filing Date:
September 15, 1998
Export Citation:
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Assignee:
Forschungszentrum Jürich Gesellschaft Mitt Beschlenktel Haftung
International Classes:
G21F9/06; C07F9/16; C07F9/30; C22B3/26; C22B3/34; C22B3/38; C22B59/00; C22B60/02; G21F9/12; (IPC1-7): C22B3/26; C22B59/00; C22B60/02; G21F9/06
Attorney, Agent or Firm:
Mitsufumi Ezaki (3 others)