【摘 要】
：
The synergistic effect of 2-ethylhexylphosphonie acid mono-(2-ethylhexyl)ester(HEHEHP, P507, HL) and Cyanex923(B) in extraction of Ce(Ⅳ), Th(Ⅳ) and La(Ⅲ)from sulfuric acid solutions has been investiga
【机 构】
：
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry,Ch
【出 处】
：
第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg
论文部分内容阅读
The synergistic effect of 2-ethylhexylphosphonie acid mono-(2-ethylhexyl)ester(HEHEHP, P507, HL) and Cyanex923(B) in extraction of Ce(Ⅳ), Th(Ⅳ) and La(Ⅲ)from sulfuric acid solutions has been investigated.Under the experimental conditions used,the largest synergistic coefficient of Ce(Ⅳ) is obtained at the mole fraction XP507=0.25,the Synergistic enhancement coefficient(Rmax) obtained for Ce(Ⅳ) is 7.43.Interestingly at conditions investigated, the synergistic coefficient of Th(Ⅳ) is less than one, which means that Th(Ⅳ) has antisynergistic effect, and that La(Ⅲ) there is no detectable extraction.
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