Comparison of extraction behavior and basicity of some substituted malonamides

Journal Article · Sat Jan 01 04:00:00 UTC 2000 · Solvent Extraction and Ion Exchange

DOI:https://doi.org/10.1080/07366290008934669· OSTI ID:20019008

Spjuth, L; Liljenzin, J O; Hudson, M J; Drew, M G.B.; Iveson, P B; Madic, C

The extraction behavior for Am(III), Eu(III) and nitric acid is compared for eight different malonamides together with experimentally determined basicities and calculated gas-phase basicities. Water extraction data for two of the malonamides are also presented and shows that the water is co-extracted or solubilized by malonamide-HNO{sub 3} species. The relationship between metal extraction from aqueous nitric acid solution, basicity and the structure of the malonamide was investigated and it was found that the highest metal extraction was achieved with ligands of lowest basicity. The introduction of phenyl substituents on the nitrogens in the malonamide or the replacement of a carbon of the central carbon chain by an ether oxygen decreases the basicity and thus increases the metal extraction. The relative order of calculated gas-phase basicities, using ab initio methods, is in good agreement with the experimentally determined basicity scale.

• Research Organization: Chalmers Univ. of Technology, Goeteborg (SE)
• OSTI ID: 20019008
• Journal Information: Solvent Extraction and Ion Exchange, Journal Name: Solvent Extraction and Ion Exchange Journal Issue: 1 Vol. 18; ISSN 0736-6299; ISSN SEIEDB
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AMERICIUM
AMIDES
EUROPIUM
EXTRACTION
NITRIC ACID
REPROCESSING
SORPTIVE PROPERTIES
SPENT FUELS