Polymeric titanium oxychloride sorbent for 188W/188Re nuclide pair separation

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dc.contributor.authorLe, VSen_AU
dc.contributor.authorNguyen, CDen_AU
dc.contributor.authorPellegrini, PAen_AU
dc.contributor.authorBui, VCen_AU
dc.date.accessioned2010-04-08T05:49:11Zen_AU
dc.date.accessioned2010-04-30T05:08:17Zen_AU
dc.date.available2010-04-08T05:49:11Zen_AU
dc.date.available2010-04-30T05:08:17Zen_AU
dc.date.issued2009-01en_AU
dc.date.statistics2009-01en_AU
dc.description.abstractThe chemical synthesis conditions (TiCl4: iPrOH reagent ratio and reaction temperature scheme) were optimized for the preparation of polymeric titanium oxychloride sorbent which met the requirements for clinically useful 188W/188Re generator production, such as high W-adsorption capacity, high 188Re-elution yield, low 188W-breakthrough, and good mechanical stability. This polymeric material was formed by polycondensation of titanium-oxychloride units, the chemical formula of which was supposed as [OTiO (Ti40 Cl80 (OH) 80 (TiO2)95.60H2O) OTiO]n. The effect of the W-content of tungstate solution on the WO42- ion adsorption (with minimizing the poly-tungstate ion adsorption) and its covalent bonding with the Ti metal atoms in the polymeric matrix were justified with respect to the optimal W-adsorption conditions for the preparation of a useful 188W/188Re generator column. The high W-adsorption capacity of about 515.6 mg W/g sorbent and 188Re elution yield of higher than 85% wereachieved. The large difference in the distribution ratio values found for alumina and polymeric titanium oxychloride sorbent in 0.005% NaCl solution (DW,Re-188 = 50 and DW, Re-188 = 1.0, respectively) offered an advantage for the preparation of a consecutive-elution based 188Re generator system which combined both 188Re elution and 188Re concentrating processes in one portable system. This generator system is of a tandem column type which consists of a polymeric titanium oxychloride sorbent coupled to an alumina column. This system gave a 188Re concentration factor of approximately 10. The overall 188Re yield achieved from this system was >80%. 188W isotope and elemental tungsten breakthrough were not detected in its 188Re eluate. This system thus offers a potential application for clinically useful 188Re production using low specific radioactivity 188W (around 500 mCi/g) producible in a medium neutron flux reactor. © 2009, Taylor & Francis Ltd.en_AU
dc.identifier.citationSo, L., Nguyen, C. D., Pellegrini, P., & Bui, V. C. (2009). Polymeric titanium oxychloride sorbent for 188W/188Re nuclide pair separation. Separation Science and Technology, 44(5), 1074-1098. doi:10.1080/01496390902728819en_AU
dc.identifier.govdoc1533en_AU
dc.identifier.issn0149-6395en_AU
dc.identifier.issue5en_AU
dc.identifier.journaltitleSeparation Science and Technologyen_AU
dc.identifier.pagination1074-1098en_AU
dc.identifier.urihttp://dx.doi.org/10.1080/01496390902728819en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3115en_AU
dc.identifier.volume44en_AU
dc.language.isoenen_AU
dc.publisherTaylor & Francisen_AU
dc.subjectTitaniumen_AU
dc.subjectOxychloridesen_AU
dc.subjectAdsorptionen_AU
dc.subjectInorganic polymersen_AU
dc.subjectRhenium 188en_AU
dc.subjectTungsten 188en_AU
dc.titlePolymeric titanium oxychloride sorbent for 188W/188Re nuclide pair separationen_AU
dc.typeJournal Articleen_AU
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