Table 2 Result summary of Nd/Dy separation experiment.

From: Rare earth separations by selective borate crystallization

Reaction times

Element

The molar mass in reactants per mmol

The molar mass in NdBOCl-2 phase per mmol

The molar mass in LnBOCl-5 /LnBOCl-6 phase per mmol

The molar mass in wash solutions per mmol

Crystallization yield

Separation factor *

3d

Nd

0.3±0.015

0.0412±0.0036

—

0.1954±0.0047

0.3487±0.0090

67.76±0.60

 

Dy

0.3±0.015

0.0007±4E-5

—

0.2248±0.0151

0.2607±0.0045

 

5d

Nd

0.3±0.015

0.2960±0.0034

0.0058±0.0003

5.6E-5±1.0E-5

0.9999±0.0500

986.33±57.15

 

Dy

0.3±0.015

0.0147±0.0012

0.2871±0.0033

3.4E-5±0.6E-5

0.9999±0.0500

 
  1. *Only the structure of NdBOCl-2 was observed in the solid product in the 3d reaction, therefore, the separation factor is calculated using the solid/aqueous model. The separation factor is calculated using the solid/solid model for the 5d reaction.
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