Published October 1988
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Synthesis and characterization of the [Te(SCN2H4)4] (SO4)2 complex. Application to the separation of 99Mo from fission products
Description
Thiourea reacts with tellurium-IV ions, in sulfuric medium, to form cationic complex which is strongly retained on cationic ion exchanger. The method was applied to separate 99Mo from 132Te obtained in the fission of 235U since molybdenum does not form such complex and passes throught the cationic exchanger column in the molibdate form. In this paper, the procedure of the tellurium-thiourea complex preparation and its characterization are described. Elemental analysis, ultraviolet and infra-red absorption spectrophotometry as well as thermogravimetry were used to characterize the complex. (author)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
A tioureia reage com ions de telurio IV, em meio sulfurico, formando complexo cationico que e fortemente retido em trocador cationico' (resina Dowex-50W-X8, 100-200 mesh). O metodo foi aplicado a separacao de 99Mo do 132Te obtidos na fissao do 235U, uma vez que o molibdenio nao complexa com a tioureia nas mesmas condicoes experimentais, saindo no efluente na forma de molibdato. No presente trabalho descrece-se o procedimento para a preparacao do referido complexo telurio-tioureia bem como sua caracterizacao por meio de analise elementar, espectrometria de absorcao na regiao do ultravioleta e do infrevermelho, e tambem por termogravimetria. (autor)Files
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Additional details
Additional titles
- Original title (Portuguese)
- Sintese e caracterizacao do complexo [Te(SCN
Publishing Information
- Imprint Pagination
- 19 p.
- Report number
- IPEN-PUB--225
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 20036465
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; FISSION PRODUCTS; INFRARED SPECTRA; MOLYBDENUM 99; SYNTHESIS; TELLURIUM COMPLEXES; THERMAL GRAVIMETRIC ANALYSIS; ULTRAVIOLET SPECTRA
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL ANALYSIS; COMPLEXES; DAYS LIVING RADIOISOTOPES; DESTRUCTIVE ANALYSIS; EVEN-ODD NUCLEI; GRAVIMETRIC ANALYSIS; INTERMEDIATE MASS NUCLEI; ISOTOPES; MATERIALS; MOLYBDENUM ISOTOPES; NUCLEI; QUANTITATIVE CHEMICAL ANALYSIS; RADIOACTIVE MATERIALS; RADIOISOTOPES; SPECTRA; SPECTROSCOPY; THERMAL ANALYSIS