Ionic liquids with polychloride anions as effective oxidants for the dissolution of UO<sub>2</sub>

Yao, Aining; Qu, Feng; Liu, Yu; Qu, Guangyin; Lin, Huang; Hu, Shaowen; Wang, Xiangyun; Chu, Taiwei

doi:10.1039/c9dt03574e

Cited by 16 publications

(11 citation statements)

References 68 publications

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“…[OMIM] 2 [SnBr 6 ] ( O h ) was synthesized and characterized by Raman and NMR spectroscopy. The 119 Sn NMR in DCM at δ = −2060 ppm as well as the Raman spectra at 205, 182, and 135 cm –1 fit well to previous literature values. ,,, …”

Section: Resultssupporting

confidence: 89%

“…Recently, this class of ILs has been studied electrochemically . Furthermore, it can be shown that these different trihalogen monoanions dissolve a variety of precious metals, by forming halogenidometallates which can therefore be used, e.g., for metal recycling purposes. ,,− However, in these important studies, unfortunately no structural analysis confirming the resulting metalate substances had been undertaken.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis, Crystallization, and Electrochemical Characterization of Room Temperature Ionic Liquid Bromidostannates(II/IV)

et al. 2021

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Ionic liquids (IL) are valuable in a variety of applications due to their high electrochemical stability and physical properties. Using the cation 1-methyl-3-octylimidazolium, [OMIM] + , the bromidostannate RTIL [OMIM][Sn +II Br 3 ], "undercooled melt" [OMIM][Sn +IV Br 5 ], and IL [OMIM] 2 [Sn +IV Br 6 ] were synthesized. The uncommon solid state structure of [SnBr 5 ] − was elucidated in the form of its RTIL salt. Additionally, the IL based on tribromine-monoanion [OMIM][Br 3 ] was used to dissolve metallic Sn, selectively resulting in the formation of [SnBr 3 ] − as confirmed by Raman spectroscopy. Subsequent cyclic voltammograms (CV) of [SnBr 3 ] − confirmed the deposition potential of metallic Sn and renewal of the polybromide [Br 3 ] − . The RTIL bromidostannates were stable compounds, making a selective electrochemical investigation of the deposition of metallic Sn(0) to Sn(+II)/Sn(+IV) redox process possible, via conductance and CV measurements. The CVs of the RTILs and of solutions in propylene carbonate had the redox couples of Sn(0)/

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Synthesis, Crystallization, and Electrochemical Characterization of Room Temperature Ionic Liquid Bromidostannates(II/IV)

et al. 2021

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“…Very recently, we found that [NEt 3 Me][Cl 3 ] can directly react with CO, without further activation by light or heat, to form phosgene (COCl 2 ), a major intermediate in the synthesis of polyurethanes and polycarbonates . Additionally, trichloride ionic liquids are useful for the oxidative dissolution of metals and alloys for metal recycling applications, as demonstrated by the group of Binnemans and others. − …”

Section: Introductionmentioning

confidence: 99%

Alkyl Ammonium Chloride Salts for Efficient Chlorine Storage at Ambient Conditions

Voßnacker

Schwarze

Keilhack

et al. 2022

ACS Sustainable Chem. Eng.

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Herein, we report the use of alkyl ammonium chloride salts as safe and sustainable chlorine storage media. The most promising candidate, [NEt3Me]Cl, stores up to 0.79 kg chlorine/kg storage material, is readily prepared, and stable against chlorination for extended times. Chlorine release can be achieved by applying heat or vacuum, or, alternatively, by the addition of water. The combination of these properties emphasizes [NEt3Me]Cl as a suitable storage medium to facilitate the flexibilization of industrial chlorine production. As polychlorides can be used for various chlorination reactions, a combined industrial process is envisaged utilizing [NEt3Me]Cl as the storage medium and the loaded system, [NEt3Me][Cl(Cl2) n ] (n = 1.68), as the reagent for industrial chlorinations.

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“…Chu und Mitarbeiter verwendeten 1‐Butyl‐3‐methylimidazoliumtrichlorid ([Bmim][Cl 3 ]), um Urandioxid (UO 2 ), einen wichtigen Bestandteil von Kernbrennstoffen, zu lösen, wobei in der ionischen Flüssigkeit [Bmim] 2 [UO 2 Cl 4 ] gebildet wird. Werden Gemische aus Urandioxid und Lanthanidoxiden in [Bmim][Cl 3 ] gelöst, wird eine selektive Kristallisation von [Bmim] 2 [UO 2 Cl 4 ] beobachtet, die die Trennung von Uran und Lanthaniden ermöglicht [40] …”

Section: Die Reaktivität Von Trichloridenunclassified

Der Aufstieg der Trichloride Ermöglicht eine Verbesserte Chlortechnologie

Kleoff¹,

Voßnacker²,

Hasenstab-Riedel³

2023

Angewandte Chemie

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Chlor spielt eine zentrale Rolle bei der industriellen Herstellung zahlreicher Produkte von globaler Bedeutung. In jüngster Zeit haben sich Polychloride von einem Gebiet akademischen Interesses zu einem Forschungsthema mit enormem industriellen Potenzial entwickelt. In diesem Aufsatz wird der Wert von Trichloriden für die Chlorspeicherung und Chlorierungsreaktionen skizziert. Insbesondere die kostengünstige ionische Flüssigkeit [NEt3Me][Cl3] zeigt eine ähnliche und manchmal sogar vorteilhafte Reaktivität im Vergleich zu Chlorgas und bietet gleichzeitig ein besseres Sicherheitsprofil. Als Chlorspeicher eingesetzt, könnte [NEt3Me][Cl3] dazu beitragen, die derzeitigen Einschränkungen bei der Lagerung und dem Transport von Chlor in größeren Mengen zu überwinden. So könnten Trichloride zu einer Schlüsseltechnik für die Flexibilisierung der Chlorproduktion werden, die eine Nutzung erneuerbarer, aber schwankender elektrischer Energie ermöglicht. Da es sich bei dem geladenen Speicher, [NEt3Me][Cl3], um ein bewährtes Chlorierungsreagenz handelt, könnte es direkt für nachgelagerte Prozesse eingesetzt werden und den Weg zu einer praktischeren und sichereren Chlorindustrie ebnen.

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Ionic liquids with polychloride anions as effective oxidants for the dissolution of UO₂

Abstract: Polychloride ionic liquids can not only successfully dissolve UO2, but also raise the chlorine efficiency.

Cited by 16 publications

References 68 publications

Synthesis, Crystallization, and Electrochemical Characterization of Room Temperature Ionic Liquid Bromidostannates(II/IV)

Synthesis, Crystallization, and Electrochemical Characterization of Room Temperature Ionic Liquid Bromidostannates(II/IV)

Alkyl Ammonium Chloride Salts for Efficient Chlorine Storage at Ambient Conditions

Der Aufstieg der Trichloride Ermöglicht eine Verbesserte Chlortechnologie

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Ionic liquids with polychloride anions as effective oxidants for the dissolution of UO2

Abstract: Polychloride ionic liquids can not only successfully dissolve UO2, but also raise the chlorine efficiency.

Cited by 16 publications

References 68 publications

Synthesis, Crystallization, and Electrochemical Characterization of Room Temperature Ionic Liquid Bromidostannates(II/IV)

Synthesis, Crystallization, and Electrochemical Characterization of Room Temperature Ionic Liquid Bromidostannates(II/IV)

Alkyl Ammonium Chloride Salts for Efficient Chlorine Storage at Ambient Conditions

Der Aufstieg der Trichloride Ermöglicht eine Verbesserte Chlortechnologie

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Ionic liquids with polychloride anions as effective oxidants for the dissolution of UO₂