Affiliation:
1. Saga University
2. University of Miyazaki
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.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference18 articles.
1. N.E. Topp, Chemistry of the rare-earth elements (Topics in inorganic & general chemistry). Elsevier Publishing, Co., Inc., New York (1965).
2. F. Villani, Rare earth technology and applications, Noyes, New Jersey (1980).
3. T. Sekine, Y. Hasegawa, Chap. 1 Introduction and Chap. 4 Solvent extraction systems, in Solvent extraction chemistry. Marcel Dekker, New York, 1977, pp.1-9 and 99-293.
4. M. Cox, J. Rydberg, Solvent extraction principles and practice, revised and expanded, Marcell Dekker, Inc, New York, 2004, pp.151-158.
5. Z. Kolarik, Recent trends in the search for new extractants, Min. Proc. Extr. Met. Rev Int. J. 21 (2000) 89–141.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献