Topic
Studtite
About: Studtite is a research topic. Over the lifetime, 90 publications have been published within this topic receiving 3450 citations.
Papers published on a yearly basis
Papers
TL;DR: In the absence of Pb, schoepite and becquerelite are the common initial corrosion products as mentioned in this paper, and they can dissolve completely under similar geochemical conditions.
438 citations
TL;DR: The paragenetic sequence (from uraninite to schoepite to uranyl silicates) is identical to those observed in weathered Uraninite deposits as discussed by the authors.
253 citations
TL;DR: High-temperature oxide-melt solution calorimetry and solubility measurements for studtite and metastudtite establishes that these phases are stable in peroxide-bearing environments, even at low H2O2 concentrations.
Abstract: Minerals containing peroxide are limited to studtite, (UO2)O2(H2O)4, and metastudtite, (UO2)O2(H2O)2. High-temperature oxide-melt solution calorimetry and solubility measurements for studtite (standard enthalpy of formation at 298 kelvin is –2344.7 ± 4.0 kilojoules per mole from the elements) establishes that these phases are stable in peroxide-bearing environments, even at low H2O2 concentrations. Natural radioactivity in a uranium deposit, or the radioactivity of nuclear waste, can create sufficient H2O2 by alpha radiolysis of water for studtite formation. Studtite and metastudtite may be important alteration phases of nuclear waste in a geological repository and of spent fuel under any long-term storage, possibly at the expense of the commonly expected uranyl oxide hydrates and uranyl silicates.
237 citations
TL;DR: In this article, the crystal chemistry of the various oxidation states of actinide elements of environmental concern was examined to identify possible incorporation mechanisms, and the incorporation of An 3+ into the sheets of the structures of ct-uranophane and boltwoodite, as well as interlayer sites of various uranyl phases, may occur.
231 citations
TL;DR: The behavior of UO2/water interface under irradiation has been investigated as a function of alpha flux using an alpha beam provided by a cyclotron in this article, and the formation of hydrated uranium peroxide (metastudtite UO4·2H2O) on leached surface was identified by X-ray diffractometry.
163 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 5 |
| 2020 | 6 |
| 2019 | 4 |
| 2018 | 8 |
| 2017 | 2 |
| 2016 | 6 |