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Title: Stability of Solid Uranyl Peroxides under Irradiation

Abstract

The effects of radiation on a variety of uranyl peroxide compounds were examined using γ-rays and 5 MeV He ions, the latter to simulate α-particles. The studied materials were studtite, [(UO 2)(O 2)(H 2O)2](H 2O) 2, the salt of the U 60 uranyl peroxide cage cluster, Li 44K 16[(UO 2)(O 2)(OH)] 60·255H 2O, the salt of U 60Ox 30 uranyl peroxide oxalate cage cluster, Li 12K 48[{(UO 2)(O 2)} 60(C 2O 4) 30]·$n$H 2O, and the salt of the U 24Pp 12 (Pp = pyrophosphate) uranyl peroxide pyrophosphate cage cluster, Li 24Na 24[(UO 2) 24(O 2) 24(P2O7)12]·120H 2O. Irradiated powders were characterized using powder X-ray diffraction, Raman spectroscopy, infrared spectroscopy, X-ray photoelectron spectroscopy, and UV–vis spectroscopy. A weakening of the uranyl bonds of U60 was found while studtite, U 60Ox 30, and U 24Pp 12 were relatively stable to $γ$-irradiation. Studtite and U 60 are the most affected by α-irradiation forming an amorphous uranyl peroxide as characterized by Raman spectroscopy and powder X-ray diffraction while U 60Ox 30 and U 24Pp 12 show minor signs of the formation of an amorphous uranyl peroxide.

Authors:
 [1];  [1];  [2];  [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Univ. of Notre Dame, IN (United States). Radiation Lab.
  2. Univ. of Notre Dame, IN (United States). Dept. of Civil and Environmental Engineering and Earth Sciences
  3. Univ. of Notre Dame, IN (United States). Dept. of Civil and Environmental Engineering and Earth Sciences, and Dept. of Chemistry and Biochemistry
  4. Univ. of Notre Dame, IN (United States). Radiation Lab., and Dept. of Physics
Publication Date:
Research Org.:
Univ. of Notre Dame, IN (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1567845
Grant/Contract Number:  
NA0003763
Resource Type:
Accepted Manuscript
Journal Name:
Inorganic Chemistry
Additional Journal Information:
Journal Volume: none; Journal Issue: none; Journal ID: ISSN 0020-1669
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY

Citation Formats

Fairley, Melissa, Myers, Nicholas M., Szymanowski, Jennifer E. S., Sigmon, Ginger E., Burns, Peter C., and LaVerne, Jay A. Stability of Solid Uranyl Peroxides under Irradiation. United States: N. p., 2019. Web. doi:10.1021/acs.inorgchem.9b02132.
Fairley, Melissa, Myers, Nicholas M., Szymanowski, Jennifer E. S., Sigmon, Ginger E., Burns, Peter C., & LaVerne, Jay A. Stability of Solid Uranyl Peroxides under Irradiation. United States. doi:10.1021/acs.inorgchem.9b02132.
Fairley, Melissa, Myers, Nicholas M., Szymanowski, Jennifer E. S., Sigmon, Ginger E., Burns, Peter C., and LaVerne, Jay A. Thu . "Stability of Solid Uranyl Peroxides under Irradiation". United States. doi:10.1021/acs.inorgchem.9b02132.
@article{osti_1567845,
title = {Stability of Solid Uranyl Peroxides under Irradiation},
author = {Fairley, Melissa and Myers, Nicholas M. and Szymanowski, Jennifer E. S. and Sigmon, Ginger E. and Burns, Peter C. and LaVerne, Jay A.},
abstractNote = {The effects of radiation on a variety of uranyl peroxide compounds were examined using γ-rays and 5 MeV He ions, the latter to simulate α-particles. The studied materials were studtite, [(UO2)(O2)(H2O)2](H2O)2, the salt of the U60 uranyl peroxide cage cluster, Li44K16[(UO2)(O2)(OH)]60·255H2O, the salt of U60Ox30 uranyl peroxide oxalate cage cluster, Li12K48[{(UO2)(O2)}60(C2O4)30]·$n$H2O, and the salt of the U24Pp12 (Pp = pyrophosphate) uranyl peroxide pyrophosphate cage cluster, Li24Na24[(UO2)24(O2)24(P2O7)12]·120H2O. Irradiated powders were characterized using powder X-ray diffraction, Raman spectroscopy, infrared spectroscopy, X-ray photoelectron spectroscopy, and UV–vis spectroscopy. A weakening of the uranyl bonds of U60 was found while studtite, U60Ox30, and U24Pp12 were relatively stable to $γ$-irradiation. Studtite and U60 are the most affected by α-irradiation forming an amorphous uranyl peroxide as characterized by Raman spectroscopy and powder X-ray diffraction while U60Ox30 and U24Pp12 show minor signs of the formation of an amorphous uranyl peroxide.},
doi = {10.1021/acs.inorgchem.9b02132},
journal = {Inorganic Chemistry},
number = none,
volume = none,
place = {United States},
year = {2019},
month = {9}
}

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This content will become publicly available on September 26, 2020
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