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Title: Morphologic and chemical characterization of products from hydrolysis of UF 6

Characterization of the chemical speciation and morphologies of products formed from hydrolysis of uranium hexafluoride (UF 6) is important for predicting dispersion and contamination of released material, or health consequences from inhalation of air-borne particles. Here, we report products of hydrolysis of UF 6 in which the quantity of water was insufficient for complete formation of UO 2F 2. Material was deposited onto carbon tape and aluminum. Scanning electron microscopy was employed to characterize textures and particle sizes, and powder X-ray diffraction analysis and μ-Fourier transform infrared absorption spectroscopy were used to characterize chemical speciation. These results revealed that the ratio of H 2O to UF 6, depository substrate composition, and storage conditions must be considered when evaluating chemical speciation, morphologic texture and particles size of UF 6 hydrolysis products. LA-UR-15-23846.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ; ORCiD logo [2] ; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Missouri, Columbia, MO (United States). Dept. of Chemistry
Publication Date:
Report Number(s):
LA-UR-15-23846
Journal ID: ISSN 0022-1139
Grant/Contract Number:
AC52-06NA25396; 2012-DN-130-NR0001-02
Type:
Accepted Manuscript
Journal Name:
Journal of Fluorine Chemistry
Additional Journal Information:
Journal Volume: 178; Journal Issue: C; Journal ID: ISSN 0022-1139
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; USDHS
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 61 RADIATION PROTECTION AND DOSIMETRY; 36 MATERIALS SCIENCE; Hydrolysis; Micro-Fourier transform infrared spectroscopy; Powder X-ray diffraction; Scanning electron microscopy; Uranium hexafluoride; UOF4
OSTI Identifier:
1457244
Alternate Identifier(s):
OSTI ID: 1246428