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Citation: Zhang Xiaofeng, Li Deqian. EXTRACTION OF RARE-EARTH IONS(Ⅲ) WITH BIS(2,4,4-TRIMETHYLPENTYL) PHOSPHINIC ACID[J]. Chinese Journal of Applied Chemistry, ;1993, 10(4): 72-74. shu

EXTRACTION OF RARE-EARTH IONS(Ⅲ) WITH BIS(2,4,4-TRIMETHYLPENTYL) PHOSPHINIC ACID

1.
Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun

Received Date: 10 August 1992
Available Online: 16 December 1992
Fund Project:

The extraction behavior of trivalent rare-earth ions (except Sc, Pm) in hydrochloric acid solution using a n-octane solution containing his(2,4,4-trimethylpentyl) phosphinic acid(HBTMPP) was studied. The mean separation factor (β_z^z+1) for the system was found to be 3.24. The system showed an advantage of higher selectivity and easier stripping ever that With HEH/EHP. The extraction mechanism for Er(Ⅲ) and Tm(Ⅲ) ions has been investigated by the method,of solpe analysis.The equilibrium constants of the extraction have been calculated and the IR and ¹H NMR spectra of the Er (Ⅲ) complex have been discussed.
- bis(trimethylpentyl) phosphinic acid,
- rare earth ions(Ⅲ),
- extraction
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