Tandem dissolution of UO3 in amide-based acidic ionic liquid and in situ electrodeposition of UO2 with regeneration of the ionic liquid: a closed cycle
Abstract
A closed cycle is demonstrated for the tandem dissolution and electroreduction of UO3 to UO2 with regeneration of the acidic ionic liquid. The dissolution is achieved by use of the acidic ionic liquid N,N-dimethylacetimidium bis(trifluoromethanesulfonimide) in 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonimide) serving as the diluent. Bulk electrolysis performed at 1.0 V vs. Ag reference yields a dark brown-black uranium deposit (UO2) on the cathode. Anodic oxidation of water in the presence of dimethylacetamide regenerates the acidic ionic liquid. We have demonstrated the individual steps in the cycle together with a sequential dissolution, electroreduction, and regeneration cycle.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Energy and Transportation Science Division
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1286700
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Dalton Transactions
- Additional Journal Information:
- Journal Volume: 45; Journal Issue: 25; Journal ID: ISSN 1477-9226
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Acidic ionic liquids; Uranium Dioxide; Dissolution; electrodeposition
Citation Formats
Wanigasekara, Eranda, Freiderich, John W., Sun, Xiao-Guang, Meisner, Roberta A., Luo, Huimin, Delmau, Lætitia H., Dai, Sheng, and Moyer, Bruce A. Tandem dissolution of UO3 in amide-based acidic ionic liquid and in situ electrodeposition of UO2 with regeneration of the ionic liquid: a closed cycle. United States: N. p., 2016.
Web. doi:10.1039/C6DT00873A.
Wanigasekara, Eranda, Freiderich, John W., Sun, Xiao-Guang, Meisner, Roberta A., Luo, Huimin, Delmau, Lætitia H., Dai, Sheng, & Moyer, Bruce A. Tandem dissolution of UO3 in amide-based acidic ionic liquid and in situ electrodeposition of UO2 with regeneration of the ionic liquid: a closed cycle. United States. https://doi.org/10.1039/C6DT00873A
Wanigasekara, Eranda, Freiderich, John W., Sun, Xiao-Guang, Meisner, Roberta A., Luo, Huimin, Delmau, Lætitia H., Dai, Sheng, and Moyer, Bruce A. Thu .
"Tandem dissolution of UO3 in amide-based acidic ionic liquid and in situ electrodeposition of UO2 with regeneration of the ionic liquid: a closed cycle". United States. https://doi.org/10.1039/C6DT00873A. https://www.osti.gov/servlets/purl/1286700.
@article{osti_1286700,
title = {Tandem dissolution of UO3 in amide-based acidic ionic liquid and in situ electrodeposition of UO2 with regeneration of the ionic liquid: a closed cycle},
author = {Wanigasekara, Eranda and Freiderich, John W. and Sun, Xiao-Guang and Meisner, Roberta A. and Luo, Huimin and Delmau, Lætitia H. and Dai, Sheng and Moyer, Bruce A.},
abstractNote = {A closed cycle is demonstrated for the tandem dissolution and electroreduction of UO3 to UO2 with regeneration of the acidic ionic liquid. The dissolution is achieved by use of the acidic ionic liquid N,N-dimethylacetimidium bis(trifluoromethanesulfonimide) in 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonimide) serving as the diluent. Bulk electrolysis performed at 1.0 V vs. Ag reference yields a dark brown-black uranium deposit (UO2) on the cathode. Anodic oxidation of water in the presence of dimethylacetamide regenerates the acidic ionic liquid. We have demonstrated the individual steps in the cycle together with a sequential dissolution, electroreduction, and regeneration cycle.},
doi = {10.1039/C6DT00873A},
journal = {Dalton Transactions},
number = 25,
volume = 45,
place = {United States},
year = {Thu May 19 00:00:00 EDT 2016},
month = {Thu May 19 00:00:00 EDT 2016}
}
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