Extraction Selectivity of a Quaternary Alkylammonium Salt for Trivalent Actinides over Trivalent Lanthanides: Does Extractant Aggregation Play a Role?

Knight, Andrew W.; Chiarizia, Renato; Soderholm, L.

doi:10.1080/07366299.2017.1326770

Title: Extraction Selectivity of a Quaternary Alkylammonium Salt for Trivalent Actinides over Trivalent Lanthanides: Does Extractant Aggregation Play a Role?

Abstract

In this paper, the extraction behavior of a quaternary alkylammonium salt extractant was investigated for its selectivity for trivalent actinides over trivalent lanthanides in nitrate and thiocyanate media. The selectivity was evaluated by solvent extraction experiments through radiochemical analysis of ²⁴¹Am and ^152/154Eu. Solvent extraction distribution and slope-analysis experiments were performed with americium(III) and europium(III) with respect to the ligand (nitrate and thiocyanate), extractant, and metal (europium only) concentrations. Further evaluation of the equilibrium expression that governs the extraction process indicated the appropriate use of the saturation method for estimation of the aggregation state of quaternary ammonium extractants in the organic phase. From the saturation method, we observed an average aggregation number of 5.4 ± 0.8 and 8.5 ± 0.9 monomers/aggregate for nitrate and thiocyanate, respectively. Through a side-by-side comparison of the nitrate and thiocyanate forms, we discuss the potential role of the aggregation in the increased selectivity for trivalent actinides over trivalent lanthanides in thiocyanate media.

Authors:

Knight, Andrew W. ^[1]; Chiarizia, Renato ^[2]; Soderholm, L. ^[2]

Univ. of Iowa, Iowa City, IA (United States)
Argonne National Lab. (ANL), Lemont, IL (United States)

Publication Date:: 2017-05-10

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Chemical Sciences, Geosciences, and Biosciences Division

OSTI Identifier:: 1389552

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Solvent Extraction and Ion Exchange

Additional Journal Information:: Journal Volume: 35; Journal Issue: 4; Journal ID: ISSN 0736-6299

Publisher:: Taylor and Francis

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Aliquat-336; americium; europium; separations; solvent extraction; thiocyanate

Citation Formats


                    Knight, Andrew W., Chiarizia, Renato, and Soderholm, L. Extraction Selectivity of a Quaternary Alkylammonium Salt for Trivalent Actinides over Trivalent Lanthanides: Does Extractant Aggregation Play a Role?.  United States: N. p., 2017. 
Web.  doi:10.1080/07366299.2017.1326770.

Copy to clipboard


                    Knight, Andrew W., Chiarizia, Renato, & Soderholm, L. Extraction Selectivity of a Quaternary Alkylammonium Salt for Trivalent Actinides over Trivalent Lanthanides: Does Extractant Aggregation Play a Role?.  United States.  https://doi.org/10.1080/07366299.2017.1326770

Copy to clipboard


                    Knight, Andrew W., Chiarizia, Renato, and Soderholm, L. Wed .  
"Extraction Selectivity of a Quaternary Alkylammonium Salt for Trivalent Actinides over Trivalent Lanthanides: Does Extractant Aggregation Play a Role?".  United States.  https://doi.org/10.1080/07366299.2017.1326770.  https://www.osti.gov/servlets/purl/1389552.

Copy to clipboard


                    
@article{osti_1389552,

  title        = {Extraction Selectivity of a Quaternary Alkylammonium Salt for Trivalent Actinides over Trivalent Lanthanides: Does Extractant Aggregation Play a Role?},

  author       = {Knight, Andrew W. and Chiarizia, Renato and Soderholm, L.},

  abstractNote = {In this paper, the extraction behavior of a quaternary alkylammonium salt extractant was investigated for its selectivity for trivalent actinides over trivalent lanthanides in nitrate and thiocyanate media. The selectivity was evaluated by solvent extraction experiments through radiochemical analysis of 241Am and 152/154Eu. Solvent extraction distribution and slope-analysis experiments were performed with americium(III) and europium(III) with respect to the ligand (nitrate and thiocyanate), extractant, and metal (europium only) concentrations. Further evaluation of the equilibrium expression that governs the extraction process indicated the appropriate use of the saturation method for estimation of the aggregation state of quaternary ammonium extractants in the organic phase. From the saturation method, we observed an average aggregation number of 5.4 ± 0.8 and 8.5 ± 0.9 monomers/aggregate for nitrate and thiocyanate, respectively. Through a side-by-side comparison of the nitrate and thiocyanate forms, we discuss the potential role of the aggregation in the increased selectivity for trivalent actinides over trivalent lanthanides in thiocyanate media.},

  doi          = {10.1080/07366299.2017.1326770},

  journal      = {Solvent Extraction and Ion Exchange},

  number       = 4,

  volume       = 35,

  place        = {United States},

  year         = {2017},

  month        = {5}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1080/07366299.2017.1326770

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 7 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

The liquid-liquid extraction of certain tripositive transplutonium ions from salted nitrate solutions with a tertiary and quaternary amine
journal, October 1966

Horwitz, E. P.; Bloomquist, C. A. A.; Sauro, L. J.
Journal of Inorganic and Nuclear Chemistry, Vol. 28, Issue 10
DOI: 10.1016/0022-1902(66)80122-7

Extraction of Am(III) and Eu(III) from Nitrate Solution with Purified Cyanex 301
journal, January 1996

Zhu, Yongjun; Chen, Jing; Jiao, Rongzhou
Solvent Extraction and Ion Exchange, Vol. 14, Issue 1
DOI: 10.1080/07366299608918326

Actinide Lanthanide Separation Process—ALSEP
journal, January 2014

Gelis, Artem V.; Lumetta, Gregg J.
Industrial & Engineering Chemistry Research, Vol. 53, Issue 4
DOI: 10.1021/ie403569e

Recycling metals by controlled transfer of ionic species between complex fluids: en route to “ienaics”
journal, November 2014

Zemb, Thomas; Bauer, Caroline; Bauduin, Pierre
Colloid and Polymer Science, Vol. 293, Issue 1
DOI: 10.1007/s00396-014-3447-x

Liquid-Liquid Equilibrium Analysis in Perspective.Part 1. Slope Analysis of the Extraction of Uranyl Nitrate from Nitric acid by Di-2-Ethylhexylsulfoxide
journal, December 1991

Moyer, Bruce A.; McDowell, W. J.; Baes, C. F.
Solvent Extraction and Ion Exchange, Vol. 9, Issue 5
DOI: 10.1080/07366299108918086

Comparison of the solution chemistry of the actinides and lanthanides
journal, September 1983

Choppin, Gregory R.
Journal of the Less Common Metals, Vol. 93, Issue 2
DOI: 10.1016/0022-5088(83)90177-7

Adaptation of the Mohr Volumetric Method to General Determinations of Chlorine.
journal, August 1919

Yoder, Lester
Journal of Industrial & Engineering Chemistry, Vol. 11, Issue 8
DOI: 10.1021/ie50116a013

New Approach to Separation of Trivalent Actinide Elements from Lanthanide Elements. Selective Liquid-Liquid Extraction with Tricaprylmethylammonium Thiocyanate.
journal, October 1964

Moore, F. L.
Analytical Chemistry, Vol. 36, Issue 11
DOI: 10.1021/ac60217a037

Crown ether complexes of UO2(NCS)2 and Th(NCS)4: clues to solution behavior or just interesting supramolecular structures?
journal, June 1998

Rogers, Robin D.; Zhang, Jianhua; Campbell, Dominique T.
Journal of Alloys and Compounds, Vol. 271-273
DOI: 10.1016/S0925-8388(98)00040-1

Extraction of some trivalent lanthanides and americium(III) by neutral organophosphorous extractants from thiocyanate solutions
journal, August 1972

Khopkar, P. K.; Narayanankutty, P.
Journal of Inorganic and Nuclear Chemistry, Vol. 34, Issue 8
DOI: 10.1016/0022-1902(72)80210-0

Extraction of Zinc(Ii) ion by Didodecylnaphthalenesulfonic acid (Hddns) in Carbon Tetrachloride: the role of Aggregation
journal, February 1991

Lumetta, Gregg J.; Moyer*, Bruce A.; Johnson, Paula A.
Solvent Extraction and Ion Exchange, Vol. 9, Issue 1
DOI: 10.1080/07366299108918048

Trends in separation factors for the lanthanum series as obtained in solvent extraction from an aqueous thiocyanate solution
journal, January 1981

Ceccaroli, B.; Alstad, J.
Journal of Inorganic and Nuclear Chemistry, Vol. 43, Issue 8
DOI: 10.1016/0022-1902(81)80402-2

Separation of Americium (III) from Lanthanides by Quaternary Ammonium Salt Extraction
journal, January 1965

Gerontopulos, P. Th.; Rigali, L.; Barbano, P. G.
Radiochimica Acta, Vol. 4, Issue 2
DOI: 10.1524/ract.1965.4.2.75

Two‐Phase Calorimetry. I. Studies on the Thermodynamics of Lanthanide Extraction by Bis(2‐EthylHexyl) Phosphoric Acid
journal, September 2008

Zalupski, P. R.; Nash, K. L.
Solvent Extraction and Ion Exchange, Vol. 26, Issue 5
DOI: 10.1080/07366290802301374

Application of the Baxter Model for Hard Spheres with Surface Adhesion to SANS Data for the U(VI)−HNO ₃ , TBP− n -Dodecane System
journal, November 2003

Chiarizia, Renato; Nash, Ken L.; Jensen, Mark P.
Langmuir, Vol. 19, Issue 23
DOI: 10.1021/la030152i

Acidic esters of orthophosphoric acid as selective extractants for metallic cations—tracer studies
journal, October 1958

Peppard, D. F.; Mason, G. W.; Driscoll, W. J.
Journal of Inorganic and Nuclear Chemistry, Vol. 7, Issue 3
DOI: 10.1016/0022-1902(58)80078-0

Extraction of selected metallic cations by di-acidic phosphorus-based extractants, XPO(OH)2, in a ketone diluent
journal, March 1966

Rao, G. S.; Mason, G. W.; Peppard, D. F.
Journal of Inorganic and Nuclear Chemistry, Vol. 28, Issue 3
DOI: 10.1016/0022-1902(66)80425-6

Reverse-Micelle Formation in the Partitioning of Trivalent f-Element Cations by Biphasic Systems Containing a Tetraalkyldiglycolamide
journal, April 2007

Jensen, Mark P.; Yaita, Tsuyoshi; Chiarizia, Renato
Langmuir, Vol. 23, Issue 9
DOI: 10.1021/la0631926

Differentiating between Trivalent Lanthanides and Actinides
journal, June 2012

Polinski, Matthew J.; Grant, Daniel J.; Wang, Shuao
Journal of the American Chemical Society, Vol. 134, Issue 25
DOI: 10.1021/ja303804r

Liquid anion exchange of thiocyanate-nitrate actinide and lanthanide complexes
journal, October 1973

Chiarizia, R.; Danesi, P. R.; Scibona, G.
Journal of Inorganic and Nuclear Chemistry, Vol. 35, Issue 10
DOI: 10.1016/0022-1902(73)80370-7

THERMODYNAMICS OF EXTRACTION OF Am(III) AND Eu(III) FROM NITRATE AND THIOCYANATE MEDIA WITH OCTYL(PHENYL)-N,N-DIISOBUTYLCARBAMOYLMETHYLPHOSPHINE OXIDE
journal, November 1998

Mathur, J. N.; Nash, K. L.
Solvent Extraction and Ion Exchange, Vol. 16, Issue 6
DOI: 10.1080/07366299808934583

Activity coefficients of strong electrolytes in multicomponent aqueous solutions
journal, March 1972

Meissner, H. P.; Kusik, C. L.
AIChE Journal, Vol. 18, Issue 2
DOI: 10.1002/aic.690180208

Equilibria of extraction of chromium(III) from alkaline solutions with trioctylmethylammonium chloride (Aliquat 336)
journal, July 2005

Wionczyk, Barbara; Apostoluk, Wiesƚaw
Hydrometallurgy, Vol. 78, Issue 1-2
DOI: 10.1016/j.hydromet.2005.03.007

Separation of actinides from spent nuclear fuel: A review
journal, November 2016

Veliscek-Carolan, Jessica
Journal of Hazardous Materials, Vol. 318
DOI: 10.1016/j.jhazmat.2016.07.027

Liquid ion exchange selectivity of dinonylnaphthalenesulfonic acid (HD) with respect to some lanthanide and actinide ions
journal, June 1975

Chiarizia, R.; Danesi, P. R.; Raieh, M. A.
Journal of Inorganic and Nuclear Chemistry, Vol. 37, Issue 6
DOI: 10.1016/0022-1902(75)80797-4

Determination of the aggregation number of dinonyl naphthalene sulfonic acid by metal ion extraction
journal, July 1974

Van Dalen, A.; Gerritsma, K. W.; Wijkstra, J.
Journal of Colloid and Interface Science, Vol. 48, Issue 1
DOI: 10.1016/0021-9797(74)90334-8

Crystal structure, spectroscopy and magnetism of binuclear complexes of mercury and lanthanides; the Ln(NCS)(HMPA) ₄ (μ-SCN) ₂ HgCl(SCN) type
journal, April 2003

GaŁDecka, E.; GaŁDecki, Z.; CybiŃSka, J.
Molecular Physics, Vol. 101, Issue 7
DOI: 10.1080/0026897021000046870

Thermodynamics of thiocyanate complexes of trivalent actinides and lanthanides
journal, April 1980

Khopkar, P. K.; Mathur, Jagdish N.
Thermochimica Acta, Vol. 37, Issue 1
DOI: 10.1016/0040-6031(80)85007-6

Coordination Chemistry of Homoleptic Actinide(IV)-Thiocyanate Complexes
journal, September 2015

Carter, Tyler J.; Wilson, Richard E.
Chemistry - A European Journal, Vol. 21, Issue 44
DOI: 10.1002/chem.201502770

Liquid-liquid extraction with long-chain quaternary Ammonium Halides
journal, January 1964

Good, Mary L.; Srivastava, Suresh C.; Holland, F. F.
Analytica Chimica Acta, Vol. 31
DOI: 10.1016/S0003-2670(00)88873-X

Lanthanide(III) complexes with bidentate biheterocyclic ligands
journal, January 1997

Thakur, P.; Chakravortty, V.; Dash, K. C.
Polyhedron, Vol. 16, Issue 9
DOI: 10.1016/S0277-5387(96)00452-4

Tetraalkylammonium Uranyl Isothiocyanates
journal, October 2012

Rowland, Clare E.; Kanatzidis, Mercouri G.; Soderholm, L.
Inorganic Chemistry, Vol. 51, Issue 21
DOI: 10.1021/ic301741u

Structures and Energetics of Erbium Chloride Complexes in Aqueous Solution
journal, June 2009

Soderholm, L.; Skanthakumar, S.; Wilson, Richard E.
The Journal of Physical Chemistry A, Vol. 113, Issue 22
DOI: 10.1021/jp9012366

Am(III) AND Eu(III) EXTRACTION BY ALIQUAT-336 AND BENZYL SUBSTITUTED QUATERNARY AMMONIUM SALTS FROM NITRATE AND THIOCYANATE SOLUTIONS*
journal, July 1995

Chiarizia, R.; Gatrone, R. C.; Horwitz, E. P.
Solvent Extraction and Ion Exchange, Vol. 13, Issue 4
DOI: 10.1080/07366299508918295

Critical survey of stability constants of complexes of thiocyanate ion (Technical Report)
journal, January 1997

Bahta, Abraha; Parker, G. A.; Tuck, D. G.
Pure and Applied Chemistry, Vol. 69, Issue 7
DOI: 10.1351/pac199769071489

Extraction of Trivalent Lanthanides and Americium by Tri- n -octylphosphine Oxide from Ammonium Thiocyanate Media
journal, March 2011

Brigham, Derek; Badajoz, Coralie; Cote, Gerard
Solvent Extraction and Ion Exchange, Vol. 29, Issue 2
DOI: 10.1080/07366299.2011.556919

The Lanthanide Contraction beyond Coordination Chemistry
journal, April 2016

Ferru, Geoffroy; Reinhart, Benjamin; Bera, Mrinal K.
Chemistry - A European Journal, Vol. 22, Issue 20
DOI: 10.1002/chem.201601032

Structural Studies Coupling X-ray Diffraction and High-Energy X-ray Scattering in the UO ₂ ²⁺ –HBr _aq System
journal, November 2011

Wilson, Richard E.; Skanthakumar, S.; Cahill, C. L.
Inorganic Chemistry, Vol. 50, Issue 21
DOI: 10.1021/ic201265s

Thiocyanate complexes of some trivalent lanthanide and actinide elements
journal, June 1965

Choppin, G. R.; Ketels, J.
Journal of Inorganic and Nuclear Chemistry, Vol. 27, Issue 6
DOI: 10.1016/0022-1902(65)80098-7

Similar Records in DOE PAGES and OSTI.GOV collections:

A counter current experiment for the separation of trivalent actinides and lanthanides by the SETFICS process

Journal Article Koma, Yoshikazu ; Watanabe, Masayuki ; Nemoto, Shinichi ; ... - Solvent Extraction and Ion Exchange

The STFICS process, a variation of TRUEX process, was developed for the recovery of Am and Cm from acidic waste solution and the separation of actinides(III) and light lanthanides. The process uses the general TRUEX solvent as the extracting reagent and a DTPA-sodium nitrate solution for selective stripping of actinides(III). The basic flow sheet is composed of four steps: extraction-scrubbing; acid stripping; actinide(III) stripping; and lanthanide stripping. To demonstrate the usefulness of the SETFICS process, a counter current experiment was conducted using a real TRUEX product solution. Americium and curium were successfully recovered with a solution of 0.05 M DTPA-4more »« less
https://doi.org/10.1080/07366299808934584
Synergistic solvent extraction of trivalent americium and europium by 2-bromodecanoic acid and neutral nitrogen-containing reagents

Journal Article Hagstroem, I ; Spjuth, L ; Enarsson, A - Solvent Extraction and Ion Exchange

The synergistic enhancement in the extraction of trivalent actinides (Am and Cm) and some lanthanides by 2-bromodecanoic acid and different nitrogen-0containing extractants was studied. The extraction by mixtures of 2-bromodecanoic acid and 2,2{prime}:6{prime},2{double_prime}-terpyridine or N,N{prime}-dimethyl-N,N{prime}-dicyclohexyltetradecyl malonamide (DMDCHTDMA) respectively, in tert-butylbenzene (TBB) or hydrogenated tetrapropene (TPH), was investigated and compared with 2,4,6-tri(2-pyridyl)-1,3,5-triazine (TPTZ) in synergy with 2-bromodecanoic acid. The synergistic enhancement and the separation factor between americium and europium was higher with the terpyridine mixture compared with the malonamide mixture. The separation factor between americium and europium from nitric acid (0.01 M) with terpyridine (0.02 M), 2-bromodecanoic acid (1 M) inmore »« less
https://doi.org/10.1080/07366299908934610
Itinerant extraction behavior of f-elements and yttrium with octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide

Journal Article Reddy, M L.P. ; Damodaran, A D ; Mathur, J N ; ... - Solvent Extraction and Ion Exchange

The extraction behavior of selected trivalent lanthanides, actinides and yttrium was studied from thiocyanate and nitrate solutions using octyl(phenyl)N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) in xylene as an extractant. It was found that these trivalent metal ions were extracted as MX{sub 3}.3CMPO (where X = SCN{sup -} or NO{sub 3}{sup -}). The equilibrium constants (K) of the above species were determined by non-linear regression analysis. The K values of trivalent lanthanides in nitrate solutions do not increase monotonically with increasing atomic number (Z), but have a maximum at Eu. On the other hand, in thiocyanate solutions, the K values increase with increasing Z.more »« less
https://doi.org/10.1080/07366299608918369
Selective extraction of trivalent actinides from lanthanides using dicyclohexyldithiophosphinic acid and tributylphosphate

Conference Wade, K L ; Morgan, D M ; Schroeder, N C

In a previous study we showed that the three dithiophosphinic acids: dicyclohexyldithio-phosphinic acid (HDCHDTP), diphenyldithiophosphinic acid (HDPhDTP), and bis(2,4,4-trimethylpentyl)-dithiophosphinic acid (Cyanex{trademark} 301) in combination with the synergist tributylphosphate (TBP) could selectively extract trivalent actinides (represented by {sup 241}Am) from lanthanides (represented by {sup 152}Eu). This study was based on the premise that actinides form more stable complexes with ligands containing soft donor atoms than lanthanides due to a slightly greater covalent bonding component for the actinide ions. However, due to the difference in the radii of Am(III) (1.07 {Angstrom}) and Eu(III) (0.95 {Angstrom}), it was necessary to extend the studymore »« less
Development and Testing of Diglycolamide Functionalized Mesoporous Silica for Sorption of Trivalent Actinides and Lanthanides

Journal Article Shusterman, Jennifer A. ; Mason, Harris E. ; Bowers, Jon ; ... - ACS Applied Materials and Interfaces

Sequestration of trivalent actinides and lanthanides present in used nuclear fuel and legacy wastes is necessary for appropriate long-term stewardship of these metals, particularly to prevent their release into the environment. Organically modified mesoporous silica is an efficient material for recovery and potential subsequent separation of actinides and lanthanides because of its high surface area, tunable ligand selection, and chemically robust substrate. Here, we have synthesized the first novel hybrid material composed of SBA-15 type mesoporous silica functionalized with diglycolamide ligands (DGA-SBA). Because of the high surface area substrate, the DGA-SBA was found to have the highest Eu capacity reportedmore »« less
Cited by 36
https://doi.org/10.1021/acsami.5b04481

Full Text Available

Similar Records

Title: Extraction Selectivity of a Quaternary Alkylammonium Salt for Trivalent Actinides over Trivalent Lanthanides: Does Extractant Aggregation Play a Role?

Abstract

Citation Formats

The liquid-liquid extraction of certain tripositive transplutonium ions from salted nitrate solutions with a tertiary and quaternary amine journal, October 1966

Extraction of Am(III) and Eu(III) from Nitrate Solution with Purified Cyanex 301 journal, January 1996

Actinide Lanthanide Separation Process—ALSEP journal, January 2014

Recycling metals by controlled transfer of ionic species between complex fluids: en route to “ienaics” journal, November 2014

Liquid-Liquid Equilibrium Analysis in Perspective.Part 1. Slope Analysis of the Extraction of Uranyl Nitrate from Nitric acid by Di-2-Ethylhexylsulfoxide journal, December 1991

Comparison of the solution chemistry of the actinides and lanthanides journal, September 1983

Adaptation of the Mohr Volumetric Method to General Determinations of Chlorine. journal, August 1919

New Approach to Separation of Trivalent Actinide Elements from Lanthanide Elements. Selective Liquid-Liquid Extraction with Tricaprylmethylammonium Thiocyanate. journal, October 1964

Crown ether complexes of UO2(NCS)2 and Th(NCS)4: clues to solution behavior or just interesting supramolecular structures? journal, June 1998

Extraction of some trivalent lanthanides and americium(III) by neutral organophosphorous extractants from thiocyanate solutions journal, August 1972

Extraction of Zinc(Ii) ion by Didodecylnaphthalenesulfonic acid (Hddns) in Carbon Tetrachloride: the role of Aggregation journal, February 1991

Trends in separation factors for the lanthanum series as obtained in solvent extraction from an aqueous thiocyanate solution journal, January 1981

Separation of Americium (III) from Lanthanides by Quaternary Ammonium Salt Extraction journal, January 1965

Two‐Phase Calorimetry. I. Studies on the Thermodynamics of Lanthanide Extraction by Bis(2‐EthylHexyl) Phosphoric Acid journal, September 2008

Application of the Baxter Model for Hard Spheres with Surface Adhesion to SANS Data for the U(VI)−HNO 3 , TBP− n -Dodecane System journal, November 2003

Acidic esters of orthophosphoric acid as selective extractants for metallic cations—tracer studies journal, October 1958

Extraction of selected metallic cations by di-acidic phosphorus-based extractants, XPO(OH)2, in a ketone diluent journal, March 1966

Reverse-Micelle Formation in the Partitioning of Trivalent f-Element Cations by Biphasic Systems Containing a Tetraalkyldiglycolamide journal, April 2007

Differentiating between Trivalent Lanthanides and Actinides journal, June 2012

Liquid anion exchange of thiocyanate-nitrate actinide and lanthanide complexes journal, October 1973

THERMODYNAMICS OF EXTRACTION OF Am(III) AND Eu(III) FROM NITRATE AND THIOCYANATE MEDIA WITH OCTYL(PHENYL)-N,N-DIISOBUTYLCARBAMOYLMETHYLPHOSPHINE OXIDE journal, November 1998

Activity coefficients of strong electrolytes in multicomponent aqueous solutions journal, March 1972

Equilibria of extraction of chromium(III) from alkaline solutions with trioctylmethylammonium chloride (Aliquat 336) journal, July 2005

Separation of actinides from spent nuclear fuel: A review journal, November 2016

Liquid ion exchange selectivity of dinonylnaphthalenesulfonic acid (HD) with respect to some lanthanide and actinide ions journal, June 1975

Determination of the aggregation number of dinonyl naphthalene sulfonic acid by metal ion extraction journal, July 1974

Crystal structure, spectroscopy and magnetism of binuclear complexes of mercury and lanthanides; the Ln(NCS)(HMPA) 4 (μ-SCN) 2 HgCl(SCN) type journal, April 2003

Thermodynamics of thiocyanate complexes of trivalent actinides and lanthanides journal, April 1980

Coordination Chemistry of Homoleptic Actinide(IV)-Thiocyanate Complexes journal, September 2015

Liquid-liquid extraction with long-chain quaternary Ammonium Halides journal, January 1964

Lanthanide(III) complexes with bidentate biheterocyclic ligands journal, January 1997

Tetraalkylammonium Uranyl Isothiocyanates journal, October 2012

Structures and Energetics of Erbium Chloride Complexes in Aqueous Solution journal, June 2009

Am(III) AND Eu(III) EXTRACTION BY ALIQUAT-336 AND BENZYL SUBSTITUTED QUATERNARY AMMONIUM SALTS FROM NITRATE AND THIOCYANATE SOLUTIONS* journal, July 1995

Critical survey of stability constants of complexes of thiocyanate ion (Technical Report) journal, January 1997

Extraction of Trivalent Lanthanides and Americium by Tri- n -octylphosphine Oxide from Ammonium Thiocyanate Media journal, March 2011

The Lanthanide Contraction beyond Coordination Chemistry journal, April 2016

Structural Studies Coupling X-ray Diffraction and High-Energy X-ray Scattering in the UO 2 2+ –HBr aq System journal, November 2011

Thiocyanate complexes of some trivalent lanthanide and actinide elements journal, June 1965

The liquid-liquid extraction of certain tripositive transplutonium ions from salted nitrate solutions with a tertiary and quaternary amine
journal, October 1966

Extraction of Am(III) and Eu(III) from Nitrate Solution with Purified Cyanex 301
journal, January 1996

Actinide Lanthanide Separation Process—ALSEP
journal, January 2014

Recycling metals by controlled transfer of ionic species between complex fluids: en route to “ienaics”
journal, November 2014

Liquid-Liquid Equilibrium Analysis in Perspective.Part 1. Slope Analysis of the Extraction of Uranyl Nitrate from Nitric acid by Di-2-Ethylhexylsulfoxide
journal, December 1991

Comparison of the solution chemistry of the actinides and lanthanides
journal, September 1983

Adaptation of the Mohr Volumetric Method to General Determinations of Chlorine.
journal, August 1919

New Approach to Separation of Trivalent Actinide Elements from Lanthanide Elements. Selective Liquid-Liquid Extraction with Tricaprylmethylammonium Thiocyanate.
journal, October 1964

Crown ether complexes of UO2(NCS)2 and Th(NCS)4: clues to solution behavior or just interesting supramolecular structures?
journal, June 1998

Extraction of some trivalent lanthanides and americium(III) by neutral organophosphorous extractants from thiocyanate solutions
journal, August 1972

Extraction of Zinc(Ii) ion by Didodecylnaphthalenesulfonic acid (Hddns) in Carbon Tetrachloride: the role of Aggregation
journal, February 1991

Trends in separation factors for the lanthanum series as obtained in solvent extraction from an aqueous thiocyanate solution
journal, January 1981

Separation of Americium (III) from Lanthanides by Quaternary Ammonium Salt Extraction
journal, January 1965

Two‐Phase Calorimetry. I. Studies on the Thermodynamics of Lanthanide Extraction by Bis(2‐EthylHexyl) Phosphoric Acid
journal, September 2008

Application of the Baxter Model for Hard Spheres with Surface Adhesion to SANS Data for the U(VI)−HNO ₃ , TBP− n -Dodecane System
journal, November 2003

Acidic esters of orthophosphoric acid as selective extractants for metallic cations—tracer studies
journal, October 1958

Extraction of selected metallic cations by di-acidic phosphorus-based extractants, XPO(OH)2, in a ketone diluent
journal, March 1966

Reverse-Micelle Formation in the Partitioning of Trivalent f-Element Cations by Biphasic Systems Containing a Tetraalkyldiglycolamide
journal, April 2007

Differentiating between Trivalent Lanthanides and Actinides
journal, June 2012

Liquid anion exchange of thiocyanate-nitrate actinide and lanthanide complexes
journal, October 1973

THERMODYNAMICS OF EXTRACTION OF Am(III) AND Eu(III) FROM NITRATE AND THIOCYANATE MEDIA WITH OCTYL(PHENYL)-N,N-DIISOBUTYLCARBAMOYLMETHYLPHOSPHINE OXIDE
journal, November 1998

Activity coefficients of strong electrolytes in multicomponent aqueous solutions
journal, March 1972

Equilibria of extraction of chromium(III) from alkaline solutions with trioctylmethylammonium chloride (Aliquat 336)
journal, July 2005

Separation of actinides from spent nuclear fuel: A review
journal, November 2016

Liquid ion exchange selectivity of dinonylnaphthalenesulfonic acid (HD) with respect to some lanthanide and actinide ions
journal, June 1975

Determination of the aggregation number of dinonyl naphthalene sulfonic acid by metal ion extraction
journal, July 1974

Crystal structure, spectroscopy and magnetism of binuclear complexes of mercury and lanthanides; the Ln(NCS)(HMPA) ₄ (μ-SCN) ₂ HgCl(SCN) type
journal, April 2003

Thermodynamics of thiocyanate complexes of trivalent actinides and lanthanides
journal, April 1980

Coordination Chemistry of Homoleptic Actinide(IV)-Thiocyanate Complexes
journal, September 2015

Liquid-liquid extraction with long-chain quaternary Ammonium Halides
journal, January 1964

Lanthanide(III) complexes with bidentate biheterocyclic ligands
journal, January 1997

Tetraalkylammonium Uranyl Isothiocyanates
journal, October 2012

Structures and Energetics of Erbium Chloride Complexes in Aqueous Solution
journal, June 2009

Am(III) AND Eu(III) EXTRACTION BY ALIQUAT-336 AND BENZYL SUBSTITUTED QUATERNARY AMMONIUM SALTS FROM NITRATE AND THIOCYANATE SOLUTIONS*
journal, July 1995

Critical survey of stability constants of complexes of thiocyanate ion (Technical Report)
journal, January 1997

Extraction of Trivalent Lanthanides and Americium by Tri- n -octylphosphine Oxide from Ammonium Thiocyanate Media
journal, March 2011

The Lanthanide Contraction beyond Coordination Chemistry
journal, April 2016

Structural Studies Coupling X-ray Diffraction and High-Energy X-ray Scattering in the UO ₂ ²⁺ –HBr _aq System
journal, November 2011

Thiocyanate complexes of some trivalent lanthanide and actinide elements
journal, June 1965