Johnstone, E.V., Bailey, D.J., Stennett, M.C. et al. (2 more authors) (2017) On the existence of AgM9(VO4)(6)I (M = Ba, Pb). RSC Advances, 7 (77). pp. 49004-49009.
Abstract
The syntheses of the reported compounds AgM9(VO4)6I (M ¼ Ba, Pb) were reinvestigated. Stoichiometric amounts of AgI with either M3(VO4)2 (M ¼ Ba, Pb) or PbO and V2O5 were reacted in the solid-state at elevated temperatures in air or in flame-sealed quartz vessels. The resulting products were characterized by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray analysis, and thermal analyses. Results show that, for all reaction conditions, the target AgM9(VO4)6I (M ¼ Ba, Pb) phases could not be isolated. Instead, heterogeneous phase distributions of primarily M3(VO4)2 (M ¼ Ba, Pb) and AgI were obtained. These findings demonstrate that AgI incorporation into single phase, iodine-deficient apatite derivatives for the immobilization of iodine-129 are not feasible under such conditions. This conclusion is important for the conditioning of iodine-129 in advanced reprocessing flowsheets, where iodine is typically sequestered as AgI.
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Copyright, Publisher and Additional Information: | © The Royal Society of Chemistry 2017. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. | ||||
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 15 Nov 2017 10:12 | ||||
Last Modified: | 15 Nov 2017 10:12 | ||||
Published Version: | https://doi.org/10.1039/c7ra09313f | ||||
Status: | Published | ||||
Publisher: | Royal Society of Chemistry | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1039/c7ra09313f | ||||
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