期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 293, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2019.111568
关键词
Binary extraction; Lanthanum; Dioctyldiglycolamic acid; Di-n-octylamine; Tri-n-octylamine; Isotherms
资金
- IGIC RAS
- Russian Foundation for Basic Research [17-03-00263, 18-29-24069]
- IPCE RAS state assignment
The extraction of lanthanum(III) from chloride and nitrate aqueous solutions in the systems involving new binary extractants based on N,N-dioctyldiglycolamic acid (HA) and di-n-octylamine (R2NH) or tri-n-octylamine (R3N) in toluene was studied. The compositions of the extracted species in the lanthanum extraction with dioctyldiglycolamates of dioctylammonium and trioctylammonium were investigated based on the analysis of the extraction isotherms. The formation of the extracted species, LaA(3), in the extraction of La(III) from chloride aqueous solutions with binary extractants was indicated. The extraction of lanthanum from nitrate aqueous solutions proceeds with the formation of 1:1 complexes between the binary extractants and La(III). The extractability of lanthanum nitrate was found to be significantly greater than that of lanthanum chloride, owing to differences in the compositions of the extracted compounds. (C) 2019 Published by Elsevier B.V.
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