Synthesis and characterization of praseodymium acetate for use in nanotechnology
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2019
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BRAZIL MRS MEETING, 18th
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Resumo
A simple and economical chemical process to obtaining praseodymium
acetate of high purity is studied. The raw material in the form of mixed rare
earths carbonate comes from an industrial separation of rare earths, thorium and
uranium in the Brazilian monazite. It is used the technique of strong cationic
exchange resin, proper to water treatment, to the praseodymium's fractionation
and it is achieved a purity of 99.9% in Pr6O11 and yield greater than or equal 80%,
with the elution by EDTA solution in pH controlled. The complex of EDTApraseodymium
is transformed in praseodymium oxide, subsequently the oxide is
dissolved in acetic acid to obtain the praseodymium acetate. The solid salt was
characterized via chemical analysis, thermal analysis, X ray diffraction and
infrared spectroscopy. In summary the analytical data collected allowed to
conclude that stoichiometric formula for the praseodymium acetate obtained is
Pr(CH3COO)3.1.5H2O. The molecular absorption spectrophotometry technique is
used to monitoring the praseodymium content during the process and mass
spectrometry to certification the purity of the praseodymium acetate. The typical
praseodymium acetate contain the followings contaminants in micrograms per
gram: Y( 20 ), Sc ( 18 ), La ( 6 ), Ce ( 26 ), Nd ( 3 ), Sm ( 18 ), Eu ( 17 ), Gd (19 ),
Tb ( 16 ), Dy (17 ), Ho ( 18 ), Er (18 ), Tm ( 16 ),Yb ( 17 ), Lu ( 17.0), Lu ( 17 ).
Como referenciar
QUEIROZ, CARLOS A. da S. Synthesis and characterization of praseodymium acetate for use in nanotechnology. In: BRAZIL MRS MEETING, 18th, September 22-26, 2019, Balneário Camburiú, SC. Abstract... São Carlos, SP: Aptor Software, 2019. p. 2554-2555. Disponível em: http://repositorio.ipen.br/handle/123456789/31050. Acesso em: 08 May 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.