Influence of alumina phases on the molybdenum adsorption capacity and chemical stability for 99Mo/99mTc generators columns
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Resumo
Technetium-99m is the clinically most used radionuclide worldwide. Although many techniques can
be applied to separate 99Mo and 99mTc, the most commonly used method is the column chromatography
with alumina as stationary phase. However, the alumina nowadays used has limited adsorption capacity
of molybdate ions which implies the need to develop or improve materials to produce high specific
activity generators. In this paper, alumina was obtained by a solid state method and heat treatments
at different conditions. The powders had a microstructure with porous particles of γ, δ, θ and α-Al2O3
phases as well as specific surface area between 36 and 312 m2 g-1. Most interesting results were reached
by powders calcined at 900oC for 5 hours which had high chemical stability and a molybdenum
adsorption capacity of 92.45 mg Mo per g alumina.
Como referenciar
GUEDES-SILVA, C.C.; FERREIRA, THIAGO dos S.; CARVALHO, FLAVIO, M.S.; PAULA, CAROLINA M. de; OTUBO, LARISSA. Influence of alumina phases on the molybdenum adsorption capacity and chemical stability for 99Mo/99mTc generators columns. Materials Research, v. 19, n. 4, p. 791-794, 2016. DOI: 10.1590/1980-5373-MR-2015-0560. Disponível em: http://repositorio.ipen.br/handle/123456789/26771. Acesso em: 20 Mar 2026.
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.