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Technique for Enhanced Rare Earth Separation

Uda, Tetsuya and Jacob, Thomas K and Hirasawa, Masahiro (2000) Technique for Enhanced Rare Earth Separation. In: Science, 289 (5488). pp. 2326-2329.


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A process is demonstrated for the efficient separation of rare earth elements, using a combination of selective reduction and vacuum distillation of halides. The large differences in the redox chemistry of the rare earth elements and in the vapor pressures of rare earth di- and trihalides are exploited for separation. Experimental proof of concept is provided for the binary systems praseodymium-neodymium and neodymium-samarium. This process enhances the separation factor for the isolation of samarium and neodymium from their mixture by more than an order of magnitude.

Item Type: Journal Article
Publication: Science
Publisher: American Association for the Advancement of Science
Keywords: rare earth;separation;vacuum distillation;selective reduction;halides
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 08 Jun 2004
Last Modified: 19 Sep 2010 04:12
URI: http://eprints.iisc.ac.in/id/eprint/238

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