N,N,N′,N′‐Tetraoctyl Diglycolamide (TODGA): A Promising Extractant for Actinide‐Partitioning from High‐Level Waste (HLW)

Ansari, Seraj A.; Pathak, P. N.; Manchanda, V. Κ.; Husain, M.; Prasad, Ashok K.; Parmar, V. S.

doi:10.1081/sei-200066296

Cited by 380 publications

(208 citation statements)

References 17 publications

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“…Еще один пример синтеза селек-тивных экстрагентов на основе ка-ликс [4]арена для разделения актинои-дов от лантаноидов был описан Ansari и сотрудниками [24,25]. Они получи-ли серию пиразин-замещенных калик-саренов 37-39 и изучили их эффектив-ность для экстракции катиона Eu 3+ из водного раствора азотной кислоты.…”

Section: экстракция катионов рзм модифицированными каликс[N]аренамиunclassified

“…Another example of the synthesis of selective extractants based on calix [4] arene to separate actinides from lanthanides has been described by Ansari and employees [24,25]. They received the series of pyrazine-substituted calixarenes 37-39 and examined their efficiency for the extraction of the cation Eu 3+ from an aqueous solution of nitric acid.…”

Section: Am and 152mentioning

confidence: 99%

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Extractants for rare earth metals

2016

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The separation of trivalent rare earth metals is perhaps the most serious challenge associated with a closed fuel cycle. The choice of ligand as extractant, which must be selective and efficient in conditions of high radiation environment, plays an important role. In this review there are the main examples of extractants for f-elements used in the present 10-20 years. Экстрагенты для редкоземельных металловРазделение трехвалентных редкоземельных металлов, возможно, является самым се-рьезным вызовом, связанным с замкнутым топливным циклом. Важную роль играет выбор лиганда в качестве экстрагента, который должен быть селективным и надежным в условиях повышенной радиации среды. В данном обзоре приведены основные примеры экстрагентов для f-элементов, применяющихся в последнии 10-20 лет.Ключевые слова: редкоземельные металлы; фосфорорганические соединения; краунэ-фиры; поданды; каликсарены; амиды дигликолевой кислоты.

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Section: экстракция катионов рзм модифицированными каликс[N]аренамиunclassified

Section: Am and 152mentioning

confidence: 99%

Extractants for rare earth metals

2016

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“…Furthermore, this extractant only contains C, H, O and N atoms, and can potentially be used in residual-waste-free extraction processes because of complete decomposition by incineration to gaseous products (CHON principle). 2,7 DODGAA is somewhat similar in structure to N,N,N′,N′-tetra(n-octyl)diglycolamide (TODGA), [13][14][15][16][17] but it is an ionizable extractant unlike TODGA. This is an advantage compared to neutral extractants because metal transfer can be simply controlled by the pH of the aqueous solution, and the process involves no anionic species.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Extraction Study Using N,N-Dioctyldiglycolamic Acid

et al. 2014

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We report on the acid dissociation constants (Ka) of diglycolamic acid-type ligands together with comprehensive data on the extraction performance of N,N-dioctyldiglycolamic acid (DODGAA) for 54 metal ions. The pKa of the diglycolamic acid framework was determined to be 3.54 ± 0.03 in water (0.1 M LiCl, 25 C) by potentiometric titration, indicating that DODGAA is strongly acidic compared with acetic acid. DODGAA can quantitatively transfer various metal ions among the 54 metal ions through a proton-exchange reaction, and provides excellent extraction performance and separation ability for rare-earth metal ions, In(III), Fe(III), Hg(II), and Pb(II) among the 54 metal ions.

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“…10,11 Lately, interest has shifted to the properties of tetraalkyl-diglycolamides, [12][13][14][15] with emphasis on tetraoctyl-diglycolamide (TODGA), suggested as an extractant of Pu(IV), Np(IV), Am(III), and Cm(III) in solutions with hydrocarbon diluents. [12][13][14] The ability of TODGA to extract many other metals has been discussed 15,16 and the very high extractive capacity of this agent was shown to allow its application as a solid extractant. 17 Complexation of trivalent lanthanides and actinides with several novel diglycolamide-functionalized calixarenes has been studied recently.…”

Section: Introductionmentioning

confidence: 99%

N,N,N’,N’-Tetrabutyl-1,10-phenanthroline- 2,9-dicarboxamide as Very Effective Extraction Agent for Trivalent Europium and Americium

Makrlík

Vaňura

Selucký

et al. 2017

ACSi

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Solvent extraction of microamounts of Eu 3+ and Am 3+ from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate (H + B -) and N,N,N',N'-tetrabutyl-1,10-phenanthroline-2,9-dicarboxamide (L) N,N,N',N'-tetrabutyl-1,10-phenanthroline-2,9-dicarboxamide) are extracted into the nitrobenzene phase. Extraction and stability constants of the cationic complex species in nitrobenzene saturated with water were determined and discussed. From the experimental results it is evident that this effective N,N,N',N'-tetrabutyl-1,10-phenanthroline-2,9-dicarboxamide receptor for the Eu 3+ and Am 3+ cations could be considered as a potential extraction agent for nuclear waste treatment.

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N,N,N′,N′‐Tetraoctyl Diglycolamide (TODGA): A Promising Extractant for Actinide‐Partitioning from High‐Level Waste (HLW)

Cited by 380 publications

References 17 publications

Extractants for rare earth metals

Extractants for rare earth metals

Comprehensive Extraction Study Using N,N-Dioctyldiglycolamic Acid

N,N,N’,N’-Tetrabutyl-1,10-phenanthroline- 2,9-dicarboxamide as Very Effective Extraction Agent for Trivalent Europium and Americium

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