Diluent and extractant effects on the enthalpy of extraction of uranium(VI) and americium(III) nitrates by trialkyl phosphates
- Indira Gandhi Centre for Atomic Research, Kalpakkam (India). Fuel Chemistry Div.
- Bhabha Atomic Research Centre, Mumbai (India). Radiochemistry and Isotope Group
The effect of various diluents such as n-hexane, n-heptane n-octane, isooctane, n-decane, n-undecane, n-dodecane, n-tetradecane, n-hexadecane, cyclohexane, benzene, toluene, p-xylene, mesitylene and o-dichlorobenzene on the enthalpy of extraction of uranyl nitrate by tri-n-amyl phosphate (TAP) over the temperature range 283 K--333 K has been studied. The results indicate that the enthalpy of extraction does not vary significantly with the diluents studied. Also enthalpies of extraction of uranyl nitrate and americium(III) nitrate by neutral organo phosphorous extractants such as tri-n-butyl phosphate (TBP), tri-n-amyl phosphate (TAP), tri-sec-butyl phosphate (TsBP), tri-isoamyl phosphate (TiAP) and tri-n-hexyl phosphate (THP) have been studied. An attempt has been made to explain the trends, on the basis of the nature of the solvate formed and the different terms which contribute to the overall enthalpy change.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 346983
- Journal Information:
- Solvent Extraction and Ion Exchange, Vol. 16, Issue 6; Other Information: PBD: Nov 1998
- Country of Publication:
- United States
- Language:
- English
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