Neodymium oxide - CAS 1313-97-9
Catalog number: 1313-97-9
Category: Main Product
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blue powder
oxo(oxoneodymiooxy)neodymium; AC1N5KQL; oxo[(oxoneodymio)oxy]neodymium; 203858_ALDRICH; 228656_ALDRICH; 634611_ALDRICH
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed. Store protected from light and air.
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1.Preparation of radioactive praseodymium oxide as a multifunctional agent in nuclear medicine: expanding the horizons of cancer therapy using nanosized neodymium oxide.
Bakht MK1, Sadeghi M, Ahmadi SJ, Sadjadi SS, Tenreiro C. Nucl Med Commun. 2013 Jan;34(1):5-12. doi: 10.1097/MNM.0b013e32835aa7bd.
OBJECTIVE: Many studies have attempted to assess the significance of the use of the β(-)particle emitter praseodymium-142 ((142)Pr) in cancer treatment. As praseodymium oxide (Pr(2)O(3)) powder is not water soluble, it was dissolved in HCl solution and the resultant solution had to be pH adjusted to be in an injectable radiopharmaceutical form. Moreover, it was shown that the nanosized neodymium oxide (Nd(2)O(3)) induced massive vacuolization and cell death in non-small-cell lung cancer. In this work, the production of (142)Pr was studied and water-dispersible nanosized Pr(2)O(3) was proposed to improve the application of (142)Pr in nuclear medicine.
2.Life cycle inventory of the production of rare earths and the subsequent production of NdFeB rare earth permanent magnets.
Sprecher B1, Xiao Y, Walton A, Speight J, Harris R, Kleijn R, Visser G, Kramer GJ. Environ Sci Technol. 2014 Apr 1;48(7):3951-8. doi: 10.1021/es404596q. Epub 2014 Mar 12.
Neodymium is one of the more critical rare earth elements with respect to current availability and is most often used in high performance magnets. In this paper, we compare the virgin production route of these magnets with two hypothetical recycling processes in terms of environmental impact. The first recycling process looks at manual dismantling of computer hard disk drives (HDDs) combined with a novel hydrogen based recycling process. The second process assumes HDDs are shredded. Our life cycle assessment is based both on up to date literature and on our own experimental data. Because the production process of neodymium oxide is generic to all rare earths, we also report the life cycle inventory data for the production of rare earth oxides separately. We conclude that recycling of neodymium, especially via manual dismantling, is preferable to primary production, with some environmental indicators showing an order of magnitude improvement.
3.Thermoluminescence and EPR studies of nanocrystalline Nd₂O₃:Ni²⁺ phosphor.
Umesh B1, Eraiah B, Nagabhushana H, Sharma SC, Sunitha DV, Nagabhushana BM, Shivakumara C, Rao JL, Chakradhar RP. Spectrochim Acta A Mol Biomol Spectrosc. 2012 Jul;93:228-34. doi: 10.1016/j.saa.2012.02.082. Epub 2012 Mar 3.
Nanocrystalline Nd(2)O(3):Ni(2+) (2 mol%) phosphor has been prepared by a low temperature (∼400°C) solution combustion method, in a very short time (<5 min). Powder X-ray diffraction results confirm the single hexagonal phase of nanopowders. Scanning electron micrographs show that nanophosphor has porous nature and the particles are agglomerated. Transmission electron microscopy confirms the nanosize (20-25 nm) of the crystallites. The electron paramagnetic resonance (EPR) spectrum exhibits a symmetric absorption at g≈2.77 which suggests that the site symmetry around Ni(2+) ions is predominantly octahedral. The number of spins participating in resonance (N) and the paramagnetic susceptibility (χ) has been evaluated. Raman study show major peaks, which are assigned to F(g) and combination of A(g)+E(g) modes. Thermoluminescence (TL) studies reveal well resolved glow peaks at 169°C along with shoulder peak at around 236°C. The activation energy (E in eV), order of kinetics (b) and frequency factor (s) were estimated using glow peak shape method.
4.Stabilization of neodymium oxide nanoparticles via soft adsorption of charged polymers.
Dorris A1, Sicard C, Chen MC, McDonald AB, Barrett CJ. ACS Appl Mater Interfaces. 2011 Sep;3(9):3357-65. doi: 10.1021/am200515q. Epub 2011 Aug 17.
In this work, two synthetic polyelectrolytes, PSS and PAH, are employed as strong adsorbed surfactants to disperse and stabilize neodymium oxide nanoparticles. The acid-base equilibria of the oxide surfaces of the particles were investigated under different pH conditions in the absence and presence of polyelectrolytes, to optimize particle stabilization through enhancement of the effective repulsive surface charges. Surface charge amplification of a 3:5 ratio was achieved to permit improved particle transparency of 100-fold in visible wavelengths in neutral and acidic pH regimes, and a stable 10-fold surface charge amplification was achieved under basic pH conditions. The potential of polyelectrolytes as stabilizing agents for neodymium oxide NPs in large-scale particle physics experiments requiring extremely high optical transparency over long path length is evaluated based on optical absorbance and particle stability.
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