METHOD AND APPARATUS FOR SEPARATING RARE EARTH IONS

WIPO Patent Application WO/2015/083292

A1

Provided are a method and an apparatus for separating a neodymium ion and a dysprosium ion from each other easily. An organic molecule capable of forming a complex with each of a neodymium ion and a dysprosium ion is added to an aqueous solution containing both of the ions to form a complex with the neodymium ion, i.e., a neodymium ion complex, and a complex with the dysprosium ion, i.e., a dysprosium ion complex, and these ion complexes are separated from each other by liquid chromatography utilizing the difference between the dipole moment of the neodymium ion complex and the dipole moment of the dysprosium ion complex. As the organic molecule, ethylenediaminetetraethylamine, ethylenediaminetetraethanol, ethylenediaminetetraacetic acid or ethylenediaminetetraacetic acid amide can be used. The liquid chromatography may be of a column chromatography type or a thin layer chromatography type using silica gel as a stationary phase and water or a mixed solvent of water and acetone as a mobile phase.

HAMADA TOMOYUKI (JP)

PCT/JP2013/082869

June 11, 2015

December 06, 2013

Click for automatic bibliography generation  

HITACHI LTD (JP)

B01D15/00; B01D15/08; B01J20/22; C01F17/282; C22B3/24; C22B7/00; C22B59/00

JPS52108199A	1977-09-10
JP2011012020A	2011-01-20
JPS6190710A	1986-05-08
JPS62145164A	1987-06-29
JPS62162620A	1987-07-18
JPH03291332A	1991-12-20
JPH0222123A	1990-01-25

R. GARCIA-VALLS: "Separation of rare earth elements by high performance liquid chromatography using a covalent modified silica gel column", ANALYTICA CHIMICA ACTA, vol. 439, no. ISSUE, 25 July 2001 (2001-07-25), pages 247 - 253

SEIRYO I. P. C. (JP)
青稜 patent business corporation (JP)

View/Download PDF      PDF Help

Previous Patent: SUPER-CONDUCTING WIRE MATERIAL, PRODUCTION METHOD THEREFOR, AND SUPER-CONDUCTING COIL USING SAME

Next Patent: SUPERVISED MACHINE LEARNING DEVICE, SUPERVISED MACHINE LEARNING METHOD, AND SUPERVISED MACHINE LEARN...