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Title: Research efforts in the extraction of actinides using new tetradentate ligands. Final report, June 1, 1991--April 15, 1992

Abstract

The synergistic extraction of two light actinides, thorium and uranium, with mixtures of 4-benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one, HBNPP, 4-hexanoyl-3-methyl-1-phenyl-2-pyrazolin-5-one, P, and 4,4{prime}-nonanedioyl-bis(3-methyl-1-phenyl-2-pyrazolin-5-one), H{sub 2}NDBP with the tri-n-octyl phosphine oxide (TOPO) has been studied. The distribution of these ions between HN0{sub 3}/NaNO{sub 3} at an ionic strength of 1.0 M and the organic phase has been detected. Studies show, with the ligands alone, H{sub 2}NDBP is much more effective than either HBNPP or BHNPP. The slope-analysis treatments indicate formations ofTh(NDBP){sub 2}, Th(BNPP){sub 4}, and Th(EWP){sub 4} for Th{sup +4}, and U0{sub 2}(NDBP), U0{sub 2}(BMPP){sub 2}, and U0{sub 2}(HMPP){sub 2} for U0{sub 2}{sup +2} in the organic phase. With the addition of TOPOas a neutral donor, Th{sup +4} shows a high extraction ability with the mixtures of chelate ligands and TOPO, and the order of the extraction power is H{sub 2}NDBP > HHNPP {approx} HBNPP within the range studied. Whereas, U0{sub 2}{sup +2} shows significant increase in the extraction distribution and the extraction power follows the same order. Results show that in the TOPO systems, separation factors were much less than in the pyrazolone systems without TOPO.

Authors:
 [1]
  1. Tennessee Technological Univ., Cookeville, TN (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Los Alamos National Lab., NM (United States); Tennessee Technological Univ., Cookeville, TN (United States). Dept. of Chemistry
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10136659
Report Number(s):
LA-SUB-93-142
ON: DE93009787
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1992
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; URANIUM; SOLVENT EXTRACTION; THORIUM; PROGRESS REPORT; SYNERGISM; ORGANIC NITROGEN COMPOUNDS; TOPO; NITRIC ACID; URANYL COMPOUNDS; LIGANDS; 400105; 050800; SEPARATION PROCEDURES; SPENT FUELS REPROCESSING

Citation Formats

Ensor, D D. Research efforts in the extraction of actinides using new tetradentate ligands. Final report, June 1, 1991--April 15, 1992. United States: N. p., 1992. Web.
Ensor, D D. Research efforts in the extraction of actinides using new tetradentate ligands. Final report, June 1, 1991--April 15, 1992. United States.
Ensor, D D. 1992. "Research efforts in the extraction of actinides using new tetradentate ligands. Final report, June 1, 1991--April 15, 1992". United States.
@article{osti_10136659,
title = {Research efforts in the extraction of actinides using new tetradentate ligands. Final report, June 1, 1991--April 15, 1992},
author = {Ensor, D D},
abstractNote = {The synergistic extraction of two light actinides, thorium and uranium, with mixtures of 4-benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one, HBNPP, 4-hexanoyl-3-methyl-1-phenyl-2-pyrazolin-5-one, P, and 4,4{prime}-nonanedioyl-bis(3-methyl-1-phenyl-2-pyrazolin-5-one), H{sub 2}NDBP with the tri-n-octyl phosphine oxide (TOPO) has been studied. The distribution of these ions between HN0{sub 3}/NaNO{sub 3} at an ionic strength of 1.0 M and the organic phase has been detected. Studies show, with the ligands alone, H{sub 2}NDBP is much more effective than either HBNPP or BHNPP. The slope-analysis treatments indicate formations ofTh(NDBP){sub 2}, Th(BNPP){sub 4}, and Th(EWP){sub 4} for Th{sup +4}, and U0{sub 2}(NDBP), U0{sub 2}(BMPP){sub 2}, and U0{sub 2}(HMPP){sub 2} for U0{sub 2}{sup +2} in the organic phase. With the addition of TOPOas a neutral donor, Th{sup +4} shows a high extraction ability with the mixtures of chelate ligands and TOPO, and the order of the extraction power is H{sub 2}NDBP > HHNPP {approx} HBNPP within the range studied. Whereas, U0{sub 2}{sup +2} shows significant increase in the extraction distribution and the extraction power follows the same order. Results show that in the TOPO systems, separation factors were much less than in the pyrazolone systems without TOPO.},
doi = {},
url = {https://www.osti.gov/biblio/10136659}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 31 00:00:00 EST 1992},
month = {Thu Dec 31 00:00:00 EST 1992}
}

Technical Report:
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