Third phase formation in extraction process of U(VI) by amides
Creators
- 1. Academia Sinica, Beijing, BJ (China). Inst. of Atomic Energy
- 2. ENEA CRE Casaccia, Fuel cycle Department, Rome, Italy
Description
The tendency of third phase formation (TPF) in amides extraction process of U(VI) is very different for different kinds of amides. The order of the tendency of TPF is namely DB2EHA with α-branching of carbonyl chain > DB2MBA with β-branching of carbonyl chain - DsBHA with branching of nitrogen > DBOA with long straight chain structure. Addition of a little TBP can decrease the tendency of TPF. There is no TPF for DBOA under very high uranium concentration. The composition of extraction complexes, either with TPF or without, is determined and it is shown that the same molar ratio of amides to UO22+ exists in the extraction complex, namely two molecules of amides to one molecule of UO2(NO3)2. Besides, there may be another extraction complex consisting of 3 molecules of amides and 2 molecules of uranyl nitrate
Additional details
Publishing Information
- Journal Title
- Journal of Nuclear and Radiochemistry
- Journal Volume
- 10
- Journal Issue
- 1
- Series
- J. Nucl. Radiochem.
- Journal Page Range
- 16-24
- ISSN
- 0253-9950
- CODEN
- HHHHD
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 20007598
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
- Descriptors DEI
- ABSORPTION SPECTRA; AMIDES; CHEMICAL COMPOSITION; PHASE STUDIES; SOLVENT EXTRACTION; SPECTROPHOTOMETRY; URANYL COMPLEXES; URANYL NITRATES
- Descriptors DEC
- ACTINIDE COMPLEXES; ACTINIDE COMPOUNDS; COMPLEXES; NITRATES; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; SEPARATION PROCESSES; SPECTRA; URANIUM COMPLEXES; URANIUM COMPOUNDS; URANYL COMPOUNDS