Question

How can separate Ln by metal by valency exchange​

Answer 1

Explanation:

Nishihama et al.

Nishihama et al.Nishihama et al. have conducted the separation of lanthanides in a micro solvent extraction, and reported achieving extraction equilibrium quickly in the narrow micro flow channel (Nishihama et al., 2006) .

Answer 2

Valency Change A few lanthanides have oxidation states of (+IV) or (+II). The properties of Ln4+ or Ln2+ are so different from those of Ln3+ that separation is fairly easy. Cerium can be separated from lanthanide mixtures quite easily as it is the only lanthanide which has Ln4+ ions stable in aqueous solution

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