Branched alkylphosphinic and disubstituted phosphinic and phosphonic acids: effective synthesis based on α-olefin dimers and applications in lanthanide extraction and separation
作者:I. E. Nifant'ev、M. E. Minyaev、A. N. Tavtorkin、A. A. Vinogradov、P. V. Ivchenko
DOI:10.1039/c7ra03770h
日期:——
been found that phosphinicacids 8–12 surpass di(2-ethylhexyl)phosphoric acid (extractant P204) in non-selective Ln3+ extractability (Ln = La, Pr, Nd, Dy and Lu). Significantly higher selectivity for heavy lanthanide extraction (Ln = Dy, Lu), compared to that of P204, is achieved by using a minimal excess of disubstituted phosphinicacids 13–24. Acid 13, which contains two branched substituents, demonstrated