1
|
Mezyk SP, Baxter M, Celis-Barros C, Grimes TS, Zalupski PR, Rae C, Zarzana CA, Cook AR, Horne GP. Effect of f-element complexation on the radiolysis of 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (HEH[EHP]). Dalton Trans 2024; 53:6881-6891. [PMID: 38407412 DOI: 10.1039/d4dt00424h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
A systematic study of the impact on the chemical reactivity of the oxidising n-dodecane radical cation (RH˙+) with f-element complexed 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (HEH[EHP]) has been undertaken utilizing time-resolved electron pulse radiolysis/transient absorption spectroscopy and high-level quantum mechanical calculations. Lanthanide ion complexed species, [Ln((HEH[EHP])2)3], exhibited vastly increased reactivity (over 10× faster) in comparison to the non-complexed ligand in n-dodecane solvent, whose rate coefficient was k = (4.66 ± 0.22) × 109 M-1 s-1. Similar reactivity enhancement was also observed for the corresponding americium ion complex, k = (5.58 ± 0.30) × 1010 M-1 s-1. The vastly increased reactivity of these f-element complexes was not due to simple increased diffusion-control of these reactions; rather, enhanced hole transfer mechanisms for the complexes were calculated to become energetically more favourable. Interestingly, the observed reactivity trend with lanthanide ion size was not linear; instead, the rate coefficients showed an initial increase (Lu to Yb) followed by a decrease (Tm to Ho), followed by another increase (Dy to La). This behaviour was excellently predicted by the calculated reaction volumes of these complexes. Complementary cobalt-60 gamma irradiations for select lanthanide complexes demonstrated that the measured kinetic differences translated to increased ligand degradation at steady-state timescales, affording ∼38% increase in ligand loss of a 1 : 1 [La((HEH[EHP])2)3] : HEH[EHP] ratio system.
Collapse
Affiliation(s)
- Stephen P Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach, Long Beach, CA 90804, USA.
| | - Makayla Baxter
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
| | | | - Travis S Grimes
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
| | - Peter R Zalupski
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
| | - Cathy Rae
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
| | - Christopher A Zarzana
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
| | - Andrew R Cook
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York, 11973, USA
| | - Gregory P Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
| |
Collapse
|
2
|
Dang AN, Rogalski MH, Pilgrim CD, Wilbanks JR, Peterman DR, Carrie JD, Zalupski PR, Mezyk SP, Horne GP. Radiolytic evaluation of a new technetium redox control reagent for advanced used nuclear fuel separations. Phys Chem Chem Phys 2024; 26:4039-4046. [PMID: 38224090 DOI: 10.1039/d3cp04987f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Technetium is a problematic radioisotope for used nuclear fuel (UNF) and subsequent waste management owing to its high environmental mobility and coextraction in reprocessing technologies as the pertechnetate anion (TcO4-). Consequently, several strategies are under development to control the transport of this radioisotope. A proposed approach is to use diaminoguanidine (DAG) for TcO4- and transuranic ion redox control. Although the initial DAG molecule is ultimately consumed in the redox process, its susceptibility to radiolysis is currently unknown under envisioned UNF reprocessing conditions, which is a critical knowledge gap for evaluating its overall suitability for this role. To this end, we report the impacts of steady-state gamma irradiation on the rate of DAG radiolysis in water, aqueous 2.0 M nitric acid (HNO3), and in a biphasic solvent system composed of aqueous 2.0 M HNO3 in contact with 1.5 M N,N-di-(2-ethylhexyl)isobutyramide (DEHiBA) dissolved in n-dodecane. Additionally, we report chemical kinetics for the reaction of DAG with key transients arising from electron pulse radiolysis, specifically the hydrated electron (eaq-), hydrogen atom (H˙), and hydroxyl (˙OH) and nitrate (NO3˙) radicals. The DAG molecule exhibited significant reactivity with the ˙OH and NO3˙ radicals, indicating that oxidation would be the predominant degradation pathway in radiation environments. This is consistent with its role as a reducing agent. Steady-state gamma irradiations demonstrated that DAG is readily degraded within a few hundred kilogray, the rate of which was found to increase upon going from water to HNO3 containing solutions and solvents systems. This was attributed to a thermal reaction between DAG and the predominant HNO3 radiolysis product, nitrous acid (HNO2), k(DAG + HNO2) = 5480 ± 85 M-1 s-1. Although no evidence was found for the radiolysis of DAG altering the radiation chemistry of the contacted DEHiBA/n-dodecane phase in the investigated biphasic system, the utility of DAG as a redox control reagent will likely be limited by significant competition with its degradation by HNO2.
Collapse
Affiliation(s)
- Anh N Dang
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach California, 90840-9507, USA.
| | - Maya H Rogalski
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach California, 90840-9507, USA.
| | - Corey D Pilgrim
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| | - Joseph R Wilbanks
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| | - Dean R Peterman
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| | - Jesse D Carrie
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| | - Peter R Zalupski
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| | - Stephen P Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach California, 90840-9507, USA.
| | - Gregory P Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| |
Collapse
|
3
|
Pilgrim CD, Grimes TS, Smith C, Heathman CR, Mathew J, Jansone-Popova S, Roy S, Ray D, Bryantsev VS, Zalupski PR. Tuning aminopolycarboxylate chelators for efficient complexation of trivalent actinides. Sci Rep 2023; 13:17855. [PMID: 37857726 PMCID: PMC10587169 DOI: 10.1038/s41598-023-44106-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 10/03/2023] [Indexed: 10/21/2023] Open
Abstract
The complexation of trivalent lanthanides and minor actinides (Am3+, Cm3+, and Cf3+) by the acyclic aminopolycarboxylate chelators 6,6'-((ethane-1,2-diylbis-((carboxymethyl)azanediyl))bis-(methylene))dipicolinic acid (H4octapa) and 6,6'-((((4-(1-(2-(2-(2-hydroxyethoxy)ethoxy)ethyl)-1H-1,2,3-triazol-4-yl)pyridine-2,6-diyl)bis-(methylene))bis-((carboxymethyl)azanediyl))bis-(methylene)) dipicolinic acid (H4pypa-peg) were studied using potentiometry, spectroscopy, competitive complexation liquid-liquid extraction, and ab initio molecular dynamics simulations. Two studied reagents are strong multidentate chelators, well-suited for applications seeking radiometal coordination for in-vivo delivery and f-element isolation. The previously reported H4octapa forms a compact coordination packet, while H4pypa-peg is less sterically constrained due to the presence of central pyridine ring. The solubility of H4octapa is limited in a non-complexing high ionic strength perchlorate media. However, the introduction of a polyethylene glycol group in H4pypa-peg increased the solubility without influencing its ability to complex the lanthanides and minor actinides in solution.
Collapse
Affiliation(s)
- Corey D Pilgrim
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, 83415, USA.
- Glenn T. Seaborg Institute, Idaho National Laboratory, Idaho Falls, ID, 83415, USA.
| | - Travis S Grimes
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, 83415, USA
| | - Clayn Smith
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, 83415, USA
| | - Colt R Heathman
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, 83415, USA
| | - Jopaul Mathew
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Santa Jansone-Popova
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
| | - Santanu Roy
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Debmalya Ray
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | | | - Peter R Zalupski
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, 83415, USA.
| |
Collapse
|
4
|
Wang Y, Mezyk SP, McLachlan JR, Grimes TS, Zalupski PR, O'Bryan HMT, Cook AR, Abergel RJ, Horne GP. Radiolytic Evaluation of 3,4,3-LI(1,2-HOPO) in Aqueous Solutions. J Phys Chem B 2023; 127:3931-3938. [PMID: 37084416 DOI: 10.1021/acs.jpcb.3c01469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
Abstract
The octadentate hydroxypyridinone ligand 3,4,3-LI(1,2-HOPO) (abbreviated as HOPO) has been identified as a promising candidate for both chelation and f-element separation technologies, two applications that require optimal performance in radiation environments. However, the radiation robustness of HOPO is currently unknown. Here, we employ a combination of time-resolved (electron pulse) and steady-state (alpha self-radiolysis) irradiation techniques to elucidate the basic chemistry of HOPO and its f-element complexes in aqueous radiation environments. Chemical kinetics were measured for the reaction of HOPO and its Nd(III) ion complex ([NdIII(HOPO)]-) with key aqueous radiation-induced radical transients (eaq-, H• atom, and •OH and NO3• radicals). The reaction of HOPO with the eaq- is believed to proceed via reduction of the hydroxypyridinone moiety, while transient adduct spectra indicate that reactions with the H• atom and •OH and NO3• radicals proceeded by addition to HOPO's hydroxypyridinone rings, potentially allowing for the generation of an extensive suite of addition products. Complementary steady-state 241Am(III)-HOPO complex ([241AmIII(HOPO)]-) irradiations showed the gradual release of 241Am(III) ions with increasing alpha dose up to 100 kGy, although complete ligand destruction was not observed.
Collapse
Affiliation(s)
- Yufei Wang
- Department of Nuclear Engineering, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Stephen P Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach, Long Beach, California 90804, United States
| | - Jeffrey R McLachlan
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Travis S Grimes
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Peter R Zalupski
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Hailie M T O'Bryan
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Andrew R Cook
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Rebecca J Abergel
- Department of Nuclear Engineering, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Gregory P Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| |
Collapse
|
5
|
Horne GP, Rotermund BM, Grimes TS, Sperling JM, Meeker DS, Zalupski PR, Beck N, Huffman ZK, Martinez DG, Beshay A, Peterman DR, Layne BH, Johnson J, Cook AR, Albrecht-Schönzart TE, Mezyk SP. Transient Radiation-Induced Berkelium(III) and Californium(III) Redox Chemistry in Aqueous Solution. Inorg Chem 2022; 61:10822-10832. [PMID: 35776877 DOI: 10.1021/acs.inorgchem.2c01106] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Despite the significant impact of radiation-induced redox reactions on the accessibility and lifetimes of actinide oxidation states, fundamental knowledge of aqueous actinide metal ion radiation chemistry is limited, especially for the late actinides. A quantitative understanding of these intrinsic radiation-induced processes is essential for investigating the fundamental properties of these actinides. We present here a picosecond electron pulse reaction kinetics study into the radiation-induced redox chemistry of trivalent berkelium (Bk(III)) and californium (Cf(III)) ions in acidic aqueous solutions at ambient temperature. New and first-of-a-kind, second-order rate coefficients are reported for the transient radical-induced reduction of Bk(III) and Cf(III) by the hydrated electron (eaq-) and hydrogen atom (H•), demonstrating a significant reactivity (up to 1011 M-1 s-1) indicative of a preference of these metals to adopt divalent states. Additionally, we report the first-ever second-order rate coefficients for the transient radical-induced oxidation of these elements by a reaction with hydroxyl (•OH) and nitrate (NO3•) radicals, which also exhibited fast reactivity (ca. 108 M-1 s-1). Transient Cf(II), Cf(IV), and Bk(IV) absorption spectra are also reported. Overall, the presented data highlight the existence of rich, complex, intrinsic late actinide radiation-induced redox chemistry that has the potential to influence the findings of other areas of actinide science.
Collapse
Affiliation(s)
- Gregory P Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415, United States
| | - Brian M Rotermund
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Travis S Grimes
- Center for Radiation Chemistry Research, Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415, United States
| | - Joseph M Sperling
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - David S Meeker
- Center for Radiation Chemistry Research, Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415, United States.,Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Peter R Zalupski
- Center for Radiation Chemistry Research, Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415, United States
| | - Nicholas Beck
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Zachary K Huffman
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Daniela Gomez Martinez
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Andrew Beshay
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach, California 90840-9507, United States
| | - Dean R Peterman
- Center for Radiation Chemistry Research, Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415, United States
| | - Bobby H Layne
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jason Johnson
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Andrew R Cook
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Thomas E Albrecht-Schönzart
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Stephen P Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach, California 90840-9507, United States
| |
Collapse
|
6
|
Horne GP, Grimes TS, Zalupski PR, Meeker DS, Albrecht-Schönzart TE, Cook AR, Mezyk SP. Curium(iii) radiation-induced reaction kinetics in aqueous media. Dalton Trans 2021; 50:10853-10859. [PMID: 34296716 DOI: 10.1039/d1dt01268a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Insight into the effects of radiolytic processes on the actinides is critical for advancing our understanding of their solution chemistry because the behaviour of these elements cannot be easily separated from the influence of their inherent radiation field. However, minimal information exists on the radiation-induced redox behaviour of curium (Cm), a key trivalent transuranic element present in used nuclear fuel and frequently used as an alpha radiation source. Here we present a kinetic study on the aqueous redox reactions of Cm(iii) with radicals generated through the radiolysis of aqueous media. In particular, we probe reaction kinetics in nitric acid solutions that are used as the aqueous phase component of used nuclear fuel reprocessing solvent systems. Second-order rate coefficients (k) were measured for the reaction of Cm(iii) with the hydrated electron (eaq-, k = (1.25 ± 0.03) × 1010 M-1 s-1), hydrogen atom (H˙, k = (5.16 ± 0.37) × 108 M-1 s-1), hydroxyl radical (˙OH, k = (1.69 ± 0.24) × 109 M-1 s-1), and nitrate radical (NO3˙, k = (4.83 ± 0.09) × 107 M-1 s-1). Furthermore, the first-ever Cm(ii) absorption spectrum (300-700 nm) is also reported. These kinetic data dispel the status quo notion of Cm(iii) possessing little to no redox chemistry in aqueous solution, and suggest that the resulting Cm(ii) and Cm(iv) transients could exist in irradiated aqueous solutions and be available to undergo subsequent redox chemistry with other solutes.
Collapse
Affiliation(s)
- Gregory P Horne
- Idaho National Laboratory, Center for Radiation Chemistry Research, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
| | - Travis S Grimes
- Idaho National Laboratory, Center for Radiation Chemistry Research, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
| | - Peter R Zalupski
- Idaho National Laboratory, Center for Radiation Chemistry Research, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
| | - David S Meeker
- Idaho National Laboratory, Center for Radiation Chemistry Research, Idaho Falls, ID, P.O. Box 1625, 83415, USA. and Florida State University, Department of Chemistry and Biochemistry, Tallahassee, FL 32306, USA
| | | | - Andrew R Cook
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York, 11973, USA
| | - Stephen P Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach California 90840-9507, USA.
| |
Collapse
|
7
|
Bessen NP, Popov IA, Heathman CR, Grimes TS, Zalupski PR, Moreau LM, Smith KF, Booth CH, Abergel RJ, Batista ER, Yang P, Shafer JC. Complexation of Lanthanides and Heavy Actinides with Aqueous Sulfur-Donating Ligands. Inorg Chem 2021; 60:6125-6134. [PMID: 33866779 DOI: 10.1021/acs.inorgchem.1c00257] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The separation of trivalent lanthanides and actinides is challenging because of their similar sizes and charge densities. S-donating extractants have shown significant selectivity for trivalent actinides over lanthanides, with single-stage americium/lanthanide separation efficiencies for some thiol-based extractants reported at >99.999%. While such separations could transform the nuclear waste management landscape, these systems are often limited by the hydrolytic and radiolytic stability of the extractant. Progress away from thiol-based systems is limited by the poorly understood and complex interactions of these extractants in organic phases, where molecular aggregation and micelle formation obfuscates assessment of the metal-extractant coordination environment. Because S-donating thioethers are generally more resistant to hydrolysis and oxidation and the aqueous phase coordination chemistry is anticipated to lack complications brought on by micelle formation, we have considered three thioethers, 2,2'-thiodiacetic acid (TDA), (2R,5S)-tetrahydrothiophene-2,5-dicarboxylic acid, and 2,5-thiophenedicarboxylic acid (TPA), as possible trivalent actinide selective reagents. Formation constants, extended X-ray absorption fine structure spectroscopy, and computational studies were completed for thioether complexes with a variety of trivalent lanthanides and actinides including Nd, Eu, Tb, Am, Cm, Bk, and Cf. TPA was found to have moderately higher selectivity for the actinides because of its ability to bind actinides in a different manner than lanthanides, but the utility of TPA is limited by poor water solubility and high rigidity. While significant competition with water for the metal center limits the efficacy of aqueous-based thioethers for separations, the characterization of these solution-phase, S-containing lanthanide and actinide complexes is the most comprehensively available in the literature to date. This is due to the breadth of lanthanides and actinides considered as well as the techniques deployed and serves as a platform for the further development of S-containing reagents for actinide separations. Additionally, this paper reports on the first bond lengths for Cf and Bk with a neutral S donor.
Collapse
Affiliation(s)
- Nathan P Bessen
- Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
| | - Ivan A Popov
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Colt R Heathman
- Idaho National Laboratory, 2525 Fremont Avenue, Idaho Falls, Idaho 83402, United States
| | - Travis S Grimes
- Idaho National Laboratory, 2525 Fremont Avenue, Idaho Falls, Idaho 83402, United States
| | - Peter R Zalupski
- Idaho National Laboratory, 2525 Fremont Avenue, Idaho Falls, Idaho 83402, United States
| | - Liane M Moreau
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Kurt F Smith
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Corwin H Booth
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Rebecca J Abergel
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Enrique R Batista
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Jenifer C Shafer
- Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
| |
Collapse
|
8
|
Toigawa T, Peterman DR, Meeker DS, Grimes TS, Zalupski PR, Mezyk SP, Cook AR, Yamashita S, Kumagai Y, Matsumura T, Horne GP. Radiation-induced effects on the extraction properties of hexa- n-octylnitrilo-triacetamide (HONTA) complexes of americium and europium. Phys Chem Chem Phys 2021; 23:1343-1351. [PMID: 33367347 DOI: 10.1039/d0cp05720g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The candidate An(iii)/Ln(iii) separation ligand hexa-n-octylnitrilo-triacetamide (HONTA) was irradiated under envisioned SELECT (Solvent Extraction from Liquid waste using Extractants of CHON-type for Transmutation) process conditions (n-dodecane/0.1 M HNO3) using a solvent test loop in conjunction with cobalt-60 gamma irradiation. The extent of HONTA radiolysis and complementary degradation product formation was quantified by HPLC-ESI-MS/MS. Further, the impact of HONTA radiolysis on process performance was evaluated by measuring the change in 243Am and 154Eu distribution ratios as a function of absorbed gamma dose. HONTA was found to decay exponentially with increasing dose, affording a dose coefficient of d = (4.48 ± 0.19) × 10-3 kGy-1. Multiple degradation products were detected by HPLC-ESI-MS/MS with dioctylamine being the dominant quantifiable species. Both 243Am and 154Eu distribution ratios exhibited an induction period of ∼70 kGy for extraction (0.1 M HNO3) and back-extraction (4.0 M HNO3) conditions, after which both values decreased with absorbed dose. The decrease in distribution ratios was attributed to a combination of the destruction of HONTA and ingrowth of dioctylamine, which is capable of interfering in metal ion complexation. The loss of HONTA with absorbed gamma dose was predominantly attributed to its reaction with the n-dodecane radical cation (R˙+). These R˙+ reaction kinetics were measured for HONTA and its 241Am and 154Eu complexes using picosecond pulsed electron radiolysis techniques. All three second-order rate coefficients (k) were essentially diffusion limited in n-dodecane indicating a significant reaction pathway: k(HONTA + R˙+) = (7.6 ± 0.8) × 109 M-1 s-1, k(Am(HONTA)2 + R˙+) = (7.1 ± 0.7) × 1010 M-1 s-1, and k(Eu(HONTA)2 + R˙+) = (9.5 ± 0.5) × 1010 M-1 s-1. HONTA-metal ion complexation afforded an order-of-magnitude increase in rate coefficient. Nanosecond time-resolved measurements showed that both direct and indirect HONTA radiolysis yielded the short-lived (<100 ns) HONTA radical cation and a second long-lived (μs) species identified as the HONTA triplet excited state. The latter was confirmed by a series of oxygen quenching picosecond pulsed electron measurements, affording a quenching rate coefficient of k(3[HONTA]* + O2) = 2.2 × 108 M-1 s-1. Overall, both the HONTA radical cation and triplet excited state are important precursors to the suite of measured HONTA degradation products.
Collapse
Affiliation(s)
- Tomohiro Toigawa
- Japan Atomic Energy Agency, Nuclear Science and Engineering Center, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan.
| | - Dean R Peterman
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., Idaho Falls, 83415, USA.
| | - David S Meeker
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., Idaho Falls, 83415, USA.
| | - Travis S Grimes
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., Idaho Falls, 83415, USA.
| | - Peter R Zalupski
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., Idaho Falls, 83415, USA.
| | - Stephen P Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach, California 90840-9507, USA
| | - Andrew R Cook
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Shinichi Yamashita
- University of Tokyo, Nuclear Professional School, School of Engineering, 2-22 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1188, Japan
| | - Yuta Kumagai
- Japan Atomic Energy Agency, Nuclear Science and Engineering Center, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan.
| | - Tatsuro Matsumura
- Japan Atomic Energy Agency, Nuclear Science and Engineering Center, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan.
| | - Gregory P Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., Idaho Falls, 83415, USA.
| |
Collapse
|
9
|
Parker-Quaife EH, Verst C, Heathman CR, Zalupski PR, Horne GP. Radiation-induced molecular hydrogen gas generation in the presence of aluminum alloy 1100. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.109117] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
10
|
Horne GP, Zalupski PR, Daubaras DL, Rae C, Mezyk SP, Mincher BJ. Radiolytic degradation of formic acid and formate in aqueous solution: modeling the final stages of organic mineralization under advanced oxidation process conditions. Water Res 2020; 186:116314. [PMID: 32854029 DOI: 10.1016/j.watres.2020.116314] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/07/2020] [Accepted: 08/17/2020] [Indexed: 06/11/2023]
Abstract
The successful use of advanced oxidation processes to treat aqueous solutions containing undesirable organic species requires the degradation of these species to lower molecular weight, lower hazard compounds. Safe application of this technology requires a thorough understanding of the mechanisms of degradation. These oxidative transformations are mainly initiated by the reactions of reactive oxygen species, particularly hydroxyl radicals. These react with organic molecules to generate carbon-centered radicals. In the presence of dissolved oxygen, the carbon-centered radicals are next converted to peroxyl radicals, which then decay to lower molecular weight species by multiple mechanistic pathways. Formic acid and its conjugate base formate are the last stable chemical species produced immediately before the complete mineralization of any organic molecule undergoing oxidative degradation in aqueous solution. Once understood, the radical-induced chemistry of formic acid/formate under these conditions has wide applicability in all advanced oxidation technologies. To develop this quantitative knowledge, we have performed a series of 60Co gamma irradiation studies on aqueous formic acid/formate over different pH and solution conditions. The measured species concentration changes, as a function of applied dose, are compared with the predictions of a kinetic computer model constructed from literature reactions and reported rate coefficients. The excellent agreement found between the results and modeling gives confidence in the mechanism presented here and provide the first complete computer model for the radiolytic degradation of formic acid in water.
Collapse
Affiliation(s)
- Gregory P Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory, ID, P.O. Box 1625, Idaho Falls 83415, USA.
| | - Peter R Zalupski
- Center for Radiation Chemistry Research, Idaho National Laboratory, ID, P.O. Box 1625, Idaho Falls 83415, USA
| | - Dayna L Daubaras
- Center for Radiation Chemistry Research, Idaho National Laboratory, ID, P.O. Box 1625, Idaho Falls 83415, USA
| | - Cathy Rae
- Center for Radiation Chemistry Research, Idaho National Laboratory, ID, P.O. Box 1625, Idaho Falls 83415, USA
| | - Stephen P Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach, CA 90840-9507, USA
| | - Bruce J Mincher
- Center for Radiation Chemistry Research, Idaho National Laboratory, ID, P.O. Box 1625, Idaho Falls 83415, USA
| |
Collapse
|
11
|
Abstract
Abstract
Separation of neptunium by solvent extraction has been based on tributylphosphate (TBP) for decades, but TBP is not fully incinerable, which adds to the burden of long-lived radioactive waste. Alternatives to TBP for uranium and plutonium extraction, such as the N,N-diakylamides, previously have been explored in the hopes of transitioning to an extractant that is incinerable. Four N,N-diakylamides, N,N-dihexylhexanamide (DHHA), N,N-dihexyloctanamide (DHOA), N,N-di(2-ethylhexyl)butanamide (DEHBA), and N,N-di(2-ethylhexyl)-iso-butanamide (DEHiBA) were considered in this work for their potential to extract millimolar concentrations of Np(IV), Np(V), and Np(VI) from nitric acid solutions into organic solutions containing 1 M extractant in Exxsol D60. Under these conditions the branching of the alkyl substituents affects the extractability of Np(VI) and Np(IV), causing three of the dialkylamides, DHHA, DHOA and DEHBA, to extract neptunium in the expected order Np(VI) > Np(IV) > > Np(V). In contrast, branched DEHiBA is so poor an extractant for Np(IV) that the extraction order becomes Np(VI) > > Np(V) > Np(IV) between 0.1 and 5.6 M HNO3 due to partial oxidation of the Np(V) in nitric acid.
Collapse
Affiliation(s)
- Jarrod M. Gogolski
- Nuclear Science and Engineering Program, Colorado School of Mines , Golden, CO 80401 , USA
| | - Peter R. Zalupski
- Aqueous Separations and Radiochemistry, Idaho National Laboratory , Idaho Falls, ID 83415 , USA
| | - Travis S. Grimes
- Aqueous Separations and Radiochemistry, Idaho National Laboratory , Idaho Falls, ID 83415 , USA
| | - Mark P. Jensen
- Nuclear Science and Engineering Program, Colorado School of Mines , Golden, CO 80401 , USA
- Department of Chemistry, Colorado School of Mines , Golden, CO 80401 , USA
| |
Collapse
|
12
|
Horne GP, Zarzana CA, Rae C, Cook AR, Mezyk SP, Zalupski PR, Wilden A, Mincher BJ. Does addition of 1-octanol as a phase modifier provide radical scavenging radioprotection for N,N,N′,N′-tetraoctyldiglycolamide (TODGA)? Phys Chem Chem Phys 2020; 22:24978-24985. [DOI: 10.1039/d0cp04310a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The incorporation of 1-octanol as a phase modifier in TODGA solvent system formulations promotes TODGA radiolysis under organic-only conditions, and radioprotection under biphasic nitric acid conditions.
Collapse
Affiliation(s)
- Gregory P. Horne
- Center for Radiation Chemistry Research
- Idaho National Laboratory
- Idaho Falls
- USA
| | | | - Cathy Rae
- Center for Radiation Chemistry Research
- Idaho National Laboratory
- Idaho Falls
- USA
| | - Andrew R. Cook
- Department of Chemistry
- Brookhaven National Laboratory
- New York
- USA
| | - Stephen P. Mezyk
- Department of Chemistry and Biochemistry
- California State University Long Beach
- Long Beach California
- USA
| | - Peter R. Zalupski
- Center for Radiation Chemistry Research
- Idaho National Laboratory
- Idaho Falls
- USA
| | - Andreas Wilden
- Forschungszentrum Jülich GmbH
- Institut für Energie- und Klimaforschung -Nukleare Entsorgung und Reaktorsicherheit- (IEK-6)
- 52428 Jülich
- Germany
| | - Bruce J. Mincher
- Center for Radiation Chemistry Research
- Idaho National Laboratory
- Idaho Falls
- USA
| |
Collapse
|
13
|
Grimes TS, Heathman CR, Jansone-Popova S, Ivanov AS, Bryantsev VS, Zalupski PR. Exploring Soft Donor Character of the N-2-Pyrazinylmethyl Group by Coordinating Trivalent Actinides and Lanthanides Using Aminopolycarboxylates. Inorg Chem 2019; 59:138-150. [DOI: 10.1021/acs.inorgchem.9b01427] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Travis S. Grimes
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Colt R. Heathman
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Santa Jansone-Popova
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Alexander S. Ivanov
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Vyacheslav S. Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Peter R. Zalupski
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| |
Collapse
|
14
|
Heathman CR, Grimes TS, Jansone-Popova S, Roy S, Bryantsev VS, Zalupski PR. Influence of a Pre-organized N-Donor Group on the Coordination of Trivalent Actinides and Lanthanides by an Aminopolycarboxylate Complexant. Chemistry 2019; 25:2545-2555. [PMID: 30444030 DOI: 10.1002/chem.201804723] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 11/14/2018] [Indexed: 01/17/2023]
Abstract
The thermodynamic influence of a pre-organized N-donor group on the coordination of trivalent actinides and lanthanides by an aqueous aminopolycarboxylate complexant has been investigated. The synthesized reagent, N-2-methylpicolinate-ethylenediamine-N,N',N'-triacetic acid (EDTA-Mpic), resembles ethylenediamine-N,N,N',N'-tetraacetic acid (EDTA) with a single acetate pendant arm replaced by a 6-carboxypyridin-2-ylmethyl group. The rigid N-donor picolinate functionality has a profound impact on ligand protonation and trivalent f element complexation equilibria, as demonstrated by potentiometric, spectroscopic, and liquid/liquid metal-partitioning studies as well as by molecular dynamics calculations. Relative to diethylenetriamine-N,N,N',N'',N''-pentaacetic acid (DTPA), the ability to preferentially bind trivalent actinides over trivalent lanthanides was moderately lowered due to the presence of the N-(6-carboxypyridin-2-ylmethyl) substituent. The structural modification substantially amplifies the total ligand acidity of EDTA-Mpic. As a result the complexant sustains the metal complexation and efficient An3+ /Ln3+ differentiation in aqueous mixtures of unprecedented acidity for this class of reagents.
Collapse
Affiliation(s)
- Colt R Heathman
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, 83415, USA
| | - Travis S Grimes
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, 83415, USA
| | - Santa Jansone-Popova
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Santanu Roy
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | | | - Peter R Zalupski
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, 83415, USA
| |
Collapse
|
15
|
Heathman CR, Grimes TS, Jansone-Popova S, Ivanov AS, Bryantsev VS, Zalupski PR. Synthesis and characterization of a novel aminopolycarboxylate complexant for efficient trivalent f-element differentiation: N-butyl-2-acetamide-diethylenetriamine-N,N',N'',N''-tetraacetic acid. Dalton Trans 2018; 47:1092-1105. [PMID: 29264611 DOI: 10.1039/c7dt04104g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The novel metal ion complexant N-butyl-2-acetamide-diethylenetriamine-N,N',N'',N''-tetraacetic acid (DTTA-BuA) uses an amide functionalization to increase the total ligand acidity and attain efficient 4f/5f differentiation in low pH conditions. The amide, when located on the diethylenetriamine platform containing four acetate pendant arms maintains the octadentate coordination sphere for all investigated trivalent f-elements. This compact coordination environment inhibits the protonation of LnL- complexes, as indicated by lower K111 constants relative to the corresponding protonation site of the free ligand. For actinide ions, the enhanced stability of AnL- lowers the K111 for americium and curium beyond the aptitude of potentiometric detection. Density functional theory computations indicate the difference in the back-donation ability of Am3+ and Eu3+ f-orbitals is mainly responsible for stronger proton affinity of EuL- compared to AmL-. The measured stability constants for the formation of AmL- and CmL- complexes are consistently higher, relative to ML- complexes with lanthanides of similar charge density. When compared with the conventional aminopolycarboxylate diethylenetriamine pentaacetic acid (DTPA), the modified DTTA-BuA complexant features higher ligand acidity and the important An3+/Ln3+ differentiation when deployed on a liquid-liquid distribution platform.
Collapse
Affiliation(s)
- Colt R Heathman
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, Idaho 83415, USA.
| | | | | | | | | | | |
Collapse
|
16
|
Grimes TS, Heathman CR, Jansone-Popova S, Ivanov AS, Roy S, Bryantsev VS, Zalupski PR. Influence of a Heterocyclic Nitrogen-Donor Group on the Coordination of Trivalent Actinides and Lanthanides by Aminopolycarboxylate Complexants. Inorg Chem 2018; 57:1373-1385. [DOI: 10.1021/acs.inorgchem.7b02792] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Travis S. Grimes
- Aqueous Separations
and Radiochemistry, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Colt R. Heathman
- Aqueous Separations
and Radiochemistry, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Santa Jansone-Popova
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Alexander S. Ivanov
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Santanu Roy
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Vyacheslav S. Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Peter R. Zalupski
- Aqueous Separations
and Radiochemistry, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| |
Collapse
|
17
|
Zalupski PR, Grimes TS, Heathman CR, Peterman DR. Optical Absorption Characteristics For [Formula: see text] and [Formula: see text] Transitions of Trivalent Americium Ion in Aqueous Electrolyte Mixtures. Appl Spectrosc 2017; 71:2608-2615. [PMID: 28671479 DOI: 10.1177/0003702817721528] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Optical absorption features for [Formula: see text] and [Formula: see text] transitions of trivalent americium ion were investigated in a wide range of aqueous combinations of perchloric and nitric acids (0.1-6.0 mol L-1). The developed qualitative matrix of extinction coefficients measures the cumulative impact of increasing electrolyte content, changes in the hydration zones of americium ion, and inner-sphere perturbation by nitrate on the absorbance. The effects of growing complexity of aqueous electrolyte medium were highlighted for the [Formula: see text] transition. Spectroscopy indicates the perturbation of the inner hydration sphere of trivalent f-element by one nitrate ligand.
Collapse
Affiliation(s)
- Peter R Zalupski
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, USA
| | - Travis S Grimes
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, USA
| | - Colt R Heathman
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, USA
| | - Dean R Peterman
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho Falls, ID, USA
| |
Collapse
|
18
|
Grimes TS, Heathman CR, Jansone-Popova S, Bryantsev VS, Goverapet Srinivasan S, Nakase M, Zalupski PR. Thermodynamic, Spectroscopic, and Computational Studies of f-Element Complexation by N-Hydroxyethyl-diethylenetriamine-N,N′,N″,N″-tetraacetic Acid. Inorg Chem 2017; 56:1722-1733. [DOI: 10.1021/acs.inorgchem.6b02897] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Travis S. Grimes
- Aqueous Separations
and Radiochemistry, Idaho National Laboratory, Idaho Falls, Idaho, 83415, United States
| | - Colt R. Heathman
- Aqueous Separations
and Radiochemistry, Idaho National Laboratory, Idaho Falls, Idaho, 83415, United States
| | - Santa Jansone-Popova
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Vyacheslav S. Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | | | - Masahiko Nakase
- Actinide Chemistry Group, Japan Atomic Energy Agency, Material Science Research Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo-pref 679-5148 Japan
| | - Peter R. Zalupski
- Aqueous Separations
and Radiochemistry, Idaho National Laboratory, Idaho Falls, Idaho, 83415, United States
| |
Collapse
|
19
|
Heathman CR, Grimes TS, Zalupski PR. Coordination Chemistry and f-Element Complexation by Diethylenetriamine-N,N″-bis(acetylglycine)-N,N′,N″-triacetic Acid. Inorg Chem 2016; 55:11600-11611. [DOI: 10.1021/acs.inorgchem.6b02158] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Colt R. Heathman
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho
Falls, Idaho 83415, United States
| | - Travis S. Grimes
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho
Falls, Idaho 83415, United States
| | - Peter R. Zalupski
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho
Falls, Idaho 83415, United States
| |
Collapse
|
20
|
Heathman CR, Grimes TS, Zalupski PR. Thermodynamic and Spectroscopic Studies of Trivalent f-element Complexation with Ethylenediamine-N,N′-di(acetylglycine)-N,N′-diacetic Acid. Inorg Chem 2016; 55:2977-85. [DOI: 10.1021/acs.inorgchem.5b02865] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Colt R. Heathman
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho
Falls, Idaho 83415, United States
| | - Travis S. Grimes
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho
Falls, Idaho 83415, United States
| | - Peter R. Zalupski
- Aqueous Separations and Radiochemistry, Idaho National Laboratory, Idaho
Falls, Idaho 83415, United States
| |
Collapse
|
21
|
Clegg SL, Zalupski PR. Ion Interaction Models and Measurements of Eu3+ Complexation: DTPA in Aqueous Solutions at 25 °C Containing 1:1 Na+ Salts and Malonate pH Buffer. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b03920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Simon L. Clegg
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom
| | | |
Collapse
|
22
|
Clegg SL, Zalupski PR, Dutech G. Ion Interaction Models and Measurements of Eu3+ Complexation: HEDTA in Aqueous Solutions at 25 °C Containing 1:1 Na+ Salts and Citrate pH Buffer. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b03917] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Simon L. Clegg
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom
| | | | - Guy Dutech
- Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| |
Collapse
|
23
|
Mezyk SP, Horne GP, Mincher BJ, Zalupski PR, Cook AR, Wishart JF. The Chemistry of Separations Ligand Degradation by Organic Radical Cations. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.proche.2016.10.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
24
|
Zalupski PR, Klaehn JR, Peterman DR. Complete Recovery of Actinides from UREX-like Raffinates Using a Combination of Hard and Soft Donor Ligands. II. Soft Donor Structure Variation. Solvent Extraction and Ion Exchange 2015. [DOI: 10.1080/07366299.2015.1064296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
25
|
Grimes TS, Zalupski PR, Martin LR. Features of the Thermodynamics of Trivalent Lanthanide/Actinide Distribution Reactions by Tri-n-octylphosphine Oxide and Bis(2-ethylhexyl) Phosphoric Acid. J Phys Chem B 2014; 118:12725-33. [DOI: 10.1021/jp507727v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Travis S. Grimes
- Aqueous
Separations and Radiochemistry
Department, Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415, United States
| | - Peter R. Zalupski
- Aqueous
Separations and Radiochemistry
Department, Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415, United States
| | - Leigh R. Martin
- Aqueous
Separations and Radiochemistry
Department, Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415, United States
| |
Collapse
|
26
|
Zalupski PR, McDowell R, Dutech G. The Adsorption of Gold, Palladium, and Platinum from Acidic Chloride Solutions on Mesoporous Carbons. Solvent Extraction and Ion Exchange 2014. [DOI: 10.1080/07366299.2014.951278] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
27
|
Zalupski PR, Ensor DD, Riddle CL, Peterman DR. Complete Recovery of Actinides from UREX-like Raffinates using a Combination of Hard and Soft Donor Ligands. Solvent Extraction and Ion Exchange 2013. [DOI: 10.1080/07366299.2013.800437] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
28
|
Griffiths TL, Martin LR, Zalupski PR, Rawcliffe J, Sarsfield MJ, Evans NDM, Sharrad CA. Understanding the Solution Behavior of Minor Actinides in the Presence of EDTA4–, Carbonate, and Hydroxide Ligands. Inorg Chem 2013; 52:3728-37. [DOI: 10.1021/ic302260a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tamara L. Griffiths
- Centre for Radiochemistry
Research, School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
| | - Leigh R. Martin
- Aqueous Separations and Radiochemistry Department, Idaho National Laboratory, P.O. Box 1625, Idaho Falls,
Idaho 83415-6150, United States
| | - Peter R. Zalupski
- Aqueous Separations and Radiochemistry Department, Idaho National Laboratory, P.O. Box 1625, Idaho Falls,
Idaho 83415-6150, United States
| | - John Rawcliffe
- National Nuclear Laboratory, Sellafield,
Seascale, Cumbria, CA20 1PG, U.K
| | - Mark J. Sarsfield
- National Nuclear Laboratory, Sellafield,
Seascale, Cumbria, CA20 1PG, U.K
| | - Nick D. M. Evans
- Department of Chemistry, Loughborough University, Loughborough, Leicestershire, LE11 3TU, U.K
| | - Clint A. Sharrad
- Centre for Radiochemistry
Research, School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
- School of Chemical Engineering
and Analytical Science, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
- Research Centre for Radwaste
and Decommissioning, Dalton Nuclear Institute, The University of Manchester, Oxford Road, Manchester,
M13 9PL, U.K
| |
Collapse
|
29
|
Herbst RS, Peterman DR, Zalupski PR, Nash KL, Tillotson RD, Delmau LH. Thermodynamics of Cesium Extraction from Acidic Media by HCCD and PEG. Solvent Extraction and Ion Exchange 2010. [DOI: 10.1080/07366299.2010.502865] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
30
|
|
31
|
McAlister DR, Dietz ML, Stepinski D, Zalupski PR, Dzielawa JA, Barrans RE, Hess JN, Herlinger AW. Application of Molecular Connectivity Indices to the Design of Supercritical Carbon Dioxide‐Soluble Metal Ion Extractants: SC‐CO2Solubilities of Symmetrically Substituted Alkylenediphosphonic Acids. SEP SCI TECHNOL 2005. [DOI: 10.1081/ss-120028445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
32
|
|