Characterization and thermogravimetric analysis of lanthanide hexafluoroacetylacetone chelates
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- 作者：Shayan Shahbazi ; S. Adam Stratz…
- 关键词：Nuclear forensics ; Thermogravimetric analysis ; Thermochromatography ; Rapid separations ; Hexafluoroacetylacetone ; Lanthanides
- 刊名：Journal of Radioanalytical and Nuclear Chemistry
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：311
- 期：1
- 页码：617-626
- 全文大小：1107KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Nuclear Chemistry; Physical Chemistry; Nuclear Physics, Heavy Ions, Hadrons; Diagnostic Radiology; Inorganic Chemistry;
- 出版者：Springer Netherlands
- ISSN：1588-2780
- 卷排序：311
文摘
This work reports the thermodynamic characterizations of organometallic species as a vehicle for the rapid separation of volatile nuclear fission products via gas chromatography due to differences in adsorption enthalpy. Because adsorption and sublimation thermodynamics are linearly correlated, there is considerable motivation to determine sublimation enthalpies. A method of isothermal thermogravimetric analysis, TGA-MS and melting point analysis are employed on thirteen lanthanide 1,1,1,5,5,5-hexafluoroacetylacetone complexes to determine sublimation enthalpies. An empirical correlation is used to estimate adsorption enthalpies of lanthanide complexes on a quartz column from the sublimation data. Additionally, four chelates are characterized by SC-XRD, elemental analysis, FTIR and NMR.