Synthesis and characterization of neodymium acetate for use in nanotechnology
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2018
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BRAZILIAN MRS MEETING, 17th
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Resumo
A simple and economical chemical process to obtaining neodymium acetate of
high purity was studied. The raw material in the form of mixed rare earths
carbonate comes from Brazilian monazite. It was used the technique of strong
cationic exchange resin, proper to water treatment to the neodymium''s
fractionation and it is achieved a purity of 99.9% in Nd2O3 and yield greater than
or equal 80%, with the elution of rare earths by EDTA solution in pH controlled.
The complex of EDTA-neodymium is transformed in neodymium oxide,
subsequently the oxide is dissolved in acetic acid to obtain the neodymium
acetate. The solid salt was characterized via chemical analysis, thermal analysis,
X ray diffraction, infrared spectroscopy and inductively coupled plasma mass
spectrometry to certify the purity.The analytical data collected allowed to
conclude that the stoichiometric formula for the compound is
Nd(CH3COO)3.1.5H2O. The typical neodymium acetate obtained (purity ≥
99.9%) contain the followings contaminants in micrograms per gram: Y(0.9), Sc
(5.1), La (1.0), Pr (3.4), Sm (12.8), Eu (1.1), Gd (15.4), Tb (2.9), Dy (5.3), Ho (7.4)
Er(1.5), Tm (0.3),Yb ( 2.5), Lu (1.0).
Como referenciar
QUEIROZ, CARLOS A. da S. Synthesis and characterization of neodymium acetate for use in nanotechnology. In: BRAZILIAN MRS MEETING, 17th, September 16-20, 2018, Natal, RN. Abstract... São Carlos: Aptor Software, 2018. p. 1222-1222. Disponível em: http://repositorio.ipen.br/handle/123456789/30324. Acesso em: 13 Feb 2025.
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