Technique for Enhanced Rare Earth Separation
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 exploi...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2000-09, Vol.289 (5488), p.2326-2329 |
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| creator | Uda, Tetsuya Jacob, K. Thomas Hirasawa, Masahiro |
| description | 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. |
| doi_str_mv | 10.1126/science.289.5488.2326 |
| format | Article |
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This process enhances the separation factor for the isolation of samarium and neodymium from their mixture by more than an order of magnitude.</description><subject>Boats</subject><subject>Chemical mixtures</subject><subject>Chemistry</subject><subject>Chlorides</subject><subject>Climate</subject><subject>Distillation</subject><subject>Earth</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Earthquakes</subject><subject>Electrons</subject><subject>Exact sciences and technology</subject><subject>Geochemistry</subject><subject>Geochemistry: general, methodology, regional studies</subject><subject>Graphite</subject><subject>Inhalants</subject><subject>Isotope separation</subject><subject>Magnets</subject><subject>Metals</subject><subject>Methods</subject><subject>Organic Chemistry</subject><subject>Rare earth elements</subject><subject>Rare earth metals</subject><subject>Solvent extraction</subject><subject>Vapor pressure</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BEC</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqN0u-L0zAYB_AgijdP_wOVIYL3Yp1J0-bHy3PMeTAceKdvQ5Y92Tq6ZiYt6H_vM1Y8JkOWvEhJPnmaNl9C3jA6ZiwXH5OroHEwzpUel4VS45zn4gkZMKrLTOeUPyUDSrnIFJXlFXmR0pZSXNP8ObliDB8Lxgdk9ABu01Q_Oxj6EIfTZmOx6mr4zUYYTm1sN8N72Nto2yo0L8kzb-sEr_rxmnz_PH2YfMnmi9nd5HaeWalom4Fm-TIHJjSUjlMJzCnhCw6qYE5rVWrpPbNagPKuoJJ7oalYCjwdVcsC-DX5cKy7jwFPllqzq5KDurYNhC4ZWfBCC8ELlDf_lQxfxrnkVCB99w_dhi42-B0mZ7yUnJWHeqMjWtsaTNX40Ebr1tBAtHVowFc4fSsE_lipKfLsDMe-gl3lzvmbE4-khV_t2nYpmbv7rxfTxY-L6afZpVTN5id0dI66UNewBoMXPlmc8PLIXQwpRfBmH6udjb8No-aQWNMn1mBizSGx5pBY3Pe2v5ZuuYPV464-ogje98AmZ2sfMaBVenSYGWzIXh_ZNrUh_l3G-EktGP8DX332OA</recordid><startdate>20000929</startdate><enddate>20000929</enddate><creator>Uda, Tetsuya</creator><creator>Jacob, K. 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This process enhances the separation factor for the isolation of samarium and neodymium from their mixture by more than an order of magnitude.</abstract><cop>Washington, DC</cop><pub>American Society for the Advancement of Science</pub><pmid>11009413</pmid><doi>10.1126/science.289.5488.2326</doi><tpages>4</tpages></addata></record> |
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| source | American Association for the Advancement of Science; Jstor Complete Legacy |
| subjects | Boats Chemical mixtures Chemistry Chlorides Climate Distillation Earth Earth sciences Earth, ocean, space Earthquakes Electrons Exact sciences and technology Geochemistry Geochemistry: general, methodology, regional studies Graphite Inhalants Isotope separation Magnets Metals Methods Organic Chemistry Rare earth elements Rare earth metals Solvent extraction Vapor pressure |
| title | Technique for Enhanced Rare Earth Separation |
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