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HomeKey Engineering MaterialsKey Engineering Materials Vol. 884Extraction Behavior of Trivalent Rare Earth Metal...

Extraction Behavior of Trivalent Rare Earth Metal Ions with Diphosphonic Acid Type Extraction Reagent

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Abstract:

Bis(phenyl hydrogen phosphonato)-1-hydroxy-3,5,5-trimethylheptane has been prepared to investigate extraction behavior of a series of trivalent rare earth metal ions. This diphosphonic acid extraction reagent exhibited high extraction ability to all ions examined, especially Sc ion. It did not exhibit apparent dependency in acid concentration, which corresponds to ion-exchange mechanism, probably due to extremely high extraction ability. Although the mutual separation of rare earths was difficult with this reagent, group separation of rare earths over divalent base metals can be accomplished. Compared with the extraction of base metals, it was found that this reagent with branched alkyl chain exhibited lower in extraction ability than diphosphonic acid with linear chain, bis(phenyl hydrogen phosphonato)-1-hydroxy-hexadecane.

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Symposium of Materials Science and Chemistry III

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Periodical:

Key Engineering Materials (Volume 884)

Pages:

133-139

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.884.133

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Online since:

May 2021

Authors:

Keisuke Ohto*, Shinpei NAKASHIMA, Yudai Tanaka, Shintaro Morisada, Hidetaka Kawakita, Tatsuya Oshima

Keywords:

Diphosphonic Acid, Extraction, Rare Earth Metal Ions

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* - Corresponding Author

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