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Citation: Cheng Bencheng, Xia Pengfei, Ouyang Hui. EXTRACTION OF SOME RARE EARTHS BY α-CHLOROALIPHATIC ACIDS[J]. Chinese Journal of Applied Chemistry, ;1988, 5(6): 79-81. shu

EXTRACTION OF SOME RARE EARTHS BY α-CHLOROALIPHATIC ACIDS

1.
Department of Chemistry, Central South University of Technology, Changsha

Received Date: 18 January 1988
Available Online: 26 May 1988

The extraction of rare earths (La³⁺,Nd³⁺,Sm³⁺ and Y³⁺) by α-chloroaliphatic acids (C₆, C₈, C₁₀, C₁₂) has been studied. The same extraction order was found for all four acids: Sm³⁺ > Nd³⁺ > La³⁺ > Y³⁺. The extraction curves of α-chloroaliphatic acids shifted to about 1pH Unit lower as compared to the non-substituted one. Therefore hydrolysis and emulsification can be avoided. Y³⁺ can be separated from other rare earths when pH is low. Both the extraction rower and separation factor (β_La/y) increased with the increase of the number of carbon in α-chloroaliphatic acids.
- α-Chloroaliphatic acids,
- Rare earths,
- Extraction
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