Data · dataset · 2026
Enthalpic Stabilization of CeTi<sub>2</sub>O<sub>6</sub> by Ce(III)‑V<sub>O</sub> Inclusion
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Brannerite (UTi<sub>2</sub>O<sub>6</sub>) is a mineral analogue that is both flexible to a wide range of actinide/lanthanide substitutions and is also highly refractory; thus, it has generated interest as a waste form for used nuclear fuel (UNF).
Description
Given the wide range of elements in UNF, systematically tracking how compositional changes map onto changes in stability will guide the rational design of waste forms like brannerite.
Changes in valence state, not just cation substitutions, are particularly important for actinide-containing materials, and the brannerite structure is flexible to a variety of charge-balancing substitutions. To isolate the impact of valence contributions to (de)stabilization of brannerite materials, a series of Ce(III/IV)Ti<sub>2</sub>O<sub>6–<i>x</i></sub> ceramics were synthesized for study. Their compositions and structures were rigorously characterized by X-ray absorption spectroscopy, X-ray diffraction, and thermogravimetric analysis.
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High temperature oxide melt drop solution calorimetry was used to investigate thermodynamic properties: 20% coupled Ce(III)-V<sub>O</sub> resulted in increased stability driven by enthalpic contributions. These findings highlight that valence-driven changes in stability are factors that must be considered when designing waste forms or other ceramic materials with longevity in mind.
Links
Where it is published
- DOI doi.org/10.1021/acs.inorgchem.6c02846.s001 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Bioinformatics and computational biology · Chemistry · Earth & Environmental Science · Ecology · Energy · Evolutionary biology · Life Sciences · Medicine & Health · Physics · Social Science · Sociology
Provenance · 1 source records, 16 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/34025329 | 13 d ago | JSON v1 |
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|---|---|---|---|
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| concepts[field].anzsrc:group:3104 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Evolutionary Biology'] |
| concepts[field].anzsrc:group:4410 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Sociology'] |
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| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/rights |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |