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Title: Gas chemical adsorption characterization of lanthanide hexafluoroacetylacetonates

Newly-established adsorption enthalpy and entropy values of 12 lanthanide hexafluoroacetylacetonates, denoted Ln[hfac] 4, along with the experimental and theoretical methodology used to obtain these values, are presented for the first time. The results of this work can be used in conjunction with theoretical modeling techniques to optimize a large-scale gas-phase separation experiment using isothermal chromatography. The results to date indicate average adsorption enthalpy and entropy values of the 12 Ln[hfac] 4 complexes ranging from -33 to -139 kJ/mol K and -299 to -557 J/mol, respectively.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [1] ;  [1] ;  [1]
  1. Univ. of Tennessee, Knoxville, TN (United States). Department of Nuclear Engineering, Radiochemistry Center of Excellence, and Institute for Nuclear Security
  2. Univ. of Tennessee, Knoxville, TN (United States). Bredeson Center for Interdisciplinary Research
  3. North-West University, Mafikeng (South Africa). Center for Applied Radiation Science and Technology (CARST); Univ. of Tennessee, Knoxville, TN (United States). Institute for Nuclear Security
Publication Date:
Grant/Contract Number:
NA0001983
Type:
Published Article
Journal Name:
Journal of Radioanalytical and Nuclear Chemistry
Additional Journal Information:
Journal Volume: 312; Journal Issue: 2; Journal ID: ISSN 0236-5731
Publisher:
Springer
Research Org:
Univ. of Tennessee, Knoxville, TN (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; Nuclear forensics; Hexafluoroacetylacetone; Rare earth separations; Nuclear security; Post-detonation
OSTI Identifier:
1347621
Alternate Identifier(s):
OSTI ID: 1426145