Nd3+ and Dy3+ can be separated in an acidic ethanol–water by fractional precipitation as phosphoester coordination polymers.
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The separation performance was found to be better in HNO3 than in HCl media.
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The Dy molar ratio to the total metal content was over 99% at c(H+) ∼ 0.15 mol L−1 in HNO3 medium.
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Association between and Nd3+ plays an important role in an increase in the separation performance.
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