Selective Dissolution and Separation of Rare Earths Using Guanidine-Based Deep Eutectic Solvents

2021 ◽  
Author(s):  
Qibin Yan ◽  
Chuanying Liu ◽  
Xingwang Zhang ◽  
Lecheng Lei ◽  
Chengliang Xiao
Keyword(s):  
Rare Earths ◽  
Deep Eutectic Solvents ◽  
Selective Dissolution

scholarly journals Separation of rare earths and other valuable metals from deep-eutectic solvents: a new alternative for the recycling of used NdFeB magnets

RSC Advances ◽  
2017 ◽  
Vol 7 (51) ◽  
pp. 32100-32113 ◽  
Author(s):  
Sofía Riaño ◽  
Martina Petranikova ◽  
Bieke Onghena ◽  
Tom Vander Hoogerstraete ◽  
Dipanjan Banerjee ◽  
...  
Keyword(s):  
Rare Earths ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Extraction System ◽  
Ndfeb Magnets ◽  
Valuable Metals

Neodymium and dysprosium can be separated using a new extraction system based on a deep-eutectic solvent and Cyanex® 923 diluted in toluene.

The Use of Deep Eutectic Solvents Ionic Liquids for Selective Dissolution and Recovery of Sn, Pb and Zn from Electric and Electronic Waste (WEEE)

2017 ◽  
Vol 68 (9) ◽  
pp. 1963-1968
Author(s):  
Ana Maria Popescu ◽  
Cristina Donath ◽  
Elena Ionela Neacsu ◽  
Vasile Soare ◽  
Ionut Constantin ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Anodic Dissolution ◽  
Electronic Waste ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Selective Dissolution ◽  
Cathodic Deposition ◽  
Structure And Morphology

The recovery of metals from a multi-component alloy obtained by crushing, melting and anodic dissolution of waste electric and electronic equipment (WEEE) has been investigated. The aim of this paper is to selective recover of Sn, Pb and Zn by a novel ecological technology using ionic liquids. Metallic Sn, Pn and Zn were electrochemically recovered from the WEEE dissolved in choline chloride-ethylene glycol-iodine ionic liquid. Cyclic voltammetry was used in order to determine the deposition potentials of the studied metals. XRD and SEM/EDX analysis methods were used to characterize the structure and morphology of the metallic deposits. Evolution of the cathodic deposition and of the chemical composition of the anode during the anodic dissolution process for Sn, Pb and Zn was also studied. This study has demonstrated the possibility of selective recovery of Sn, Pb and Zn from the multi-component alloy (which resulted from consecutive anodic dissolution of WEEE) by anodic dissolution/deposition in ionic liquids.

The Effects of Ion Implantation on the Surface Features of Inconel 600

1985 ◽  
Vol 43 ◽  
pp. 288-289
Author(s):  
John D. Rubio
Keyword(s):  
Grain Boundary ◽  
Ion Implantation ◽  
Nuclear Power ◽  
Power Plants ◽  
Surface Region ◽  
Selective Dissolution ◽  
Boundary Region ◽  
Near Surface ◽  
Inconel 600 ◽  
Steam Generator Tubing

The degradation of steam generator tubing at nuclear power plants has become an important problem for the electric utilities generating nuclear power. The material used for the tubing, Inconel 600, has been found to be succeptible to intergranular attack (IGA). IGA is the selective dissolution of material along its grain boundaries. The author believes that the sensitivity of Inconel 600 to IGA can be minimized by homogenizing the near-surface region using ion implantation. The collisions between the implanted ions and the atoms in the grain boundary region would displace the atoms and thus effectively smear the grain boundary.To determine the validity of this hypothesis, an Inconel 600 sample was implanted with 100kV N2+ ions to a dose of 1x1016 ions/cm2 and electrolytically etched in a 5% Nital solution at 5V for 20 seconds. The etched sample was then examined using a JEOL JSM25S scanning electron microscope.

ANISOTROPIE ET MAGNÉTOSTRICTIONMAGNETOCRYSTALLINE ANISOTROPY IN RARE EARTHS AND THEIR ALLOYS

1971 ◽  
Vol 32 (C1) ◽  
pp. C1-179-C1-185 ◽  
Author(s):  
S. CHIKAZUMI ◽  
K. TAJIMA ◽  
K. TOYAMA
Keyword(s):  
Rare Earths

Magnetic susceptibility of dilute alloys of rare earths in magnesium

1979 ◽  
Vol 40 (C5) ◽  
pp. C5-17-C5-18
Author(s):  
M. de Jong ◽  
P. Touborg ◽  
J. Bijvoet
Keyword(s):  
Magnetic Susceptibility ◽  
Rare Earths ◽  
Dilute Alloys

THERMOPOWER OF SOME IRON-RARE EARTHS COMPOUNDS FROM 2 K-1000 K

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-511-C2-512 ◽  
Author(s):  
E. Gratz ◽  
E. Bauer ◽  
S. Pöllinger ◽  
H. Nowotny ◽  
A. T. Burkov ◽  
...  
Keyword(s):  
Rare Earths ◽  
Rare Earths Compounds
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