New Trident Molecule with Phosphoric Acid Functionality for Trivalent Rare Earth Extraction

Ohto, Keisuke; Murashima, Hiromasa; Murakami, Hiroshi; Morisada, Shintaro; Kawakita, Hidetaka; Wenzel, Marco; Weigand, Jan J.; Gloe, Karsten

doi:10.22146/ijc.26880

Cited by 6 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our groups have also prepared a variety of organophosphorus acid reagents as phosphonic acid with chelating oxygen atom [7], calix [4]arene derivatives in cone conformation at upper rim [8] and at lower rim [9][10][11][12] and trimethylol type of tripodal compounds [13,14]. Such three-dimensionally arranged extraction reagents exhibited higher extraction ability than the corresponding monomeric derivatives and the monopodal compounds.…”

Section: Introductionmentioning

confidence: 99%

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

Ohto

Nakashima

Tanaka

et al. 2021

KEM

Self Cite

View full text Add to dashboard Cite

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.

show abstract