Spectroscopic investigation of historical uranium glasses

Calas, Georges; Galoisy, Laurence; Hunault, Myrtille O.J.Y.; Rautiyal, Prince; Skerratt-Love, Katrina; Rigby, Jessica C.; Bingham, Paul A.

doi:10.1016/j.culher.2022.11.008

Cited by 2 publications

(3 citation statements)

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“…SBNAL-U55 and SBNAL-U57 showed yellow and dark green, respectively. This is because it produced yellow, green, ivory and orange colors due to the presence of uranyl ion . In addition, the samples sintered with UCSG were characterized by XRD analysis.…”

Section: Resultsmentioning

confidence: 99%

“…This is because it produced yellow, green, ivory and orange colors due to the presence of uranyl ion. 28 In addition, the samples sintered with UCSG were characterized by XRD analysis. In Figure 2(d), after sintering, all samples still appear in a good glassy state.…”

Section: Acquisition Of Uranium-containing Silica Gel Glassmentioning

confidence: 99%

“…Meanwhile, we also learned that B 2 O 3 plays a glass fluxing role and that uranium was used as a colorant in glass from the beginning of the 19th century to the first half of the 20th century. Through spectroscopic studies of historical uranium glasses, Calas et al confirmed that uranium mainly exists in the form of uranyl groups and that uranium can exist in glasses. During the vitrification process, color was controlled by adjusting the oxidation state of uranium and adding complementary coloring components .…”

Section: Introductionmentioning

confidence: 99%

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Research on the Properties of Wasteforms after Direct Involvement of Uranium-Containing Silica Gel in Glass Network Formation

Qiu,

Cheng,

et al. 2024

Inorg. Chem.

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Uranium-containing silica gel (UCSG) is a secondary waste generated during the advanced treatment of nuclear wastewater. In order to reduce the growing storage pressure for UCSG, from the perspective of building a borosilicate glass network, UCSG was used to replace SiO 2 in the glass-cured formula to directly achieve the immobilization of UCSG. SEM-EDS results showed that uranium was uniformly distributed in the matrix, and the maximum solid solubility of UCSG (two components: silica gel and uranyl ions) in the formula was as high as 55 wt %. At the same time, TG-MS proved that silica gel lost OH groups (down about 4.61 wt %) and formed Si-O-Si bond by condensation. FT-IR and XPS proved a change in the number of Si-O-Si bond, and new Si-O-B and Si-O-Al bond appeared on the spectrum. This was evidence that silica gel could self-involved participate in the construction of glass networks. EPR analysis obtained the changes in the coordination environment of U atom, the U atom decreased spin electrons number in the glass than in uranyl crystals. The glass also has good physical properties (hardness: 6.51 ± 0.23 GPa; density: 2.3977 ± 0.0056 g/cm 3 ) and chemical durability (normalized leaching rate: LR U = 2.34 × 10 −4 ± 2.05 × 10 −6 g•m 2 •days −1 after 42 days), this research provided tactics for simple treatment of uranium-containing silica gel in one step.

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Section: Resultsmentioning

confidence: 99%

Section: Acquisition Of Uranium-containing Silica Gel Glassmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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