Separation of Europium from Other Rare Earths

Separation of Europium from Other Rare Earths 

From a partly refined rare earth mixture, europium, practically free from other rare earths, may be recovered 

Inorganic Syntheses, Volume II Edited by W Conard Fernelius 1946 by McGraw-Hill Book Company, Inc. 

In practice, ytterbium, which also forms an amalgam, need not be considered, since it will have been eliminated at an earlier stage in the separation of the rare earths. Samarium does not interfere if the electrolysis is stopped at the point at which the solution ceases to bleach litmus. 

The required rare earth acetate-citrate solution is prepared from the crude material as described in part A for a pure europium compound. The electrolytic cells may be increased in size to handle any required quantity of solution. Electrolysis is carried out under conditions paralleling those described in part A. 

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B. Separation of Europium from Other Rare Earths... 

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