Sur la séparation des terres rares à l'aide de l'acide éthylènediamine‐tétraacétique. IX. Procédé en cycle pour le fractionnement des terres yttriques | Zendy

Brunisholz G. | Zendy; Randin M. | Zendy

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Sur la séparation des terres rares à l'aide de l'acide éthylènediamine‐tétraacétique. IX. Procédé en cycle pour le fractionnement des terres yttriques

Author(s) -

Brunisholz G.,

Randin M.

Publication year - 1959

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.19590420622

Subject(s) - chemistry , yttrium , lanthanide , yield (engineering) , medicinal chemistry , fractionation , cerium , nuclear chemistry , inorganic chemistry , chromatography , organic chemistry , physics , ion , thermodynamics , oxide

A cyclic process for the fractionation of the yttrium earths is described. The existence of a miscibility gap between the salts NH 4 [R'‐EDTA], 8 H 2 O and NH 4 [R″‐EDTA] − , 6 H 2 O (R′ = elements of the cerium group plus Gd and Tb; R″ = elements Dy to Lu, including Y; EDT.4 = ethylendiamine‐tetraacetate) provides an excellent separation. The method is suitable for collecting in a small fraction and with a high yield the traces of the heavy lanthanides present in a mixture containing about 80% (Sin + Gd).

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