Effect of Benzyltriethylammonium Di-2-ethylhexyl Sulfosuccinate on the Extraction of Lanthanides(III) from Nitric Acid Solutions with Bis(diphenylphosphorylmethylcarbonylamino)alkanesстатья
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Дата последнего поиска статьи во внешних источниках: 4 марта 2026 г.
Аннотация:Abstract—The effi ciency of the lanthanide(III) extraction from nitric acid solutions with bis(diphenylphosphorylmethylcarbonylamino)alkane (bis-CMPO) solutions in organic solvents signifi cantly increases in the presenceof an ionic liquid, benzyltriethylammonium di-2-ethylhexyl sulfosuccinate ([N222Bn]SSu), in the organic phase.The lanthanide(III) distribution ratios in the extraction from 3 M HNO3 solution with bis-CMPO solutions indichloroethane increased by more than two orders of magnitude in the presence of [N222Bn]SSu. Lanthanide(III)ions are extracted with mixtures of bis-CMPO and the ionic liquid in organic solvents via the cation-exchangemechanism. The infl uence of the structure of bis-carbamoylmethylphosphine oxides, kind of organic diluent, andHNO3 concentration in the aqueous phase on the effi ciency of the metal ion extraction into the organic phasecontaining the ionic liquid is discussed.