Electrochemistry of uranium(IV) in acidic AlCl3+N-(n-butyl)pyridinium chloride room-temperature molten salts

Waele, R. De; Heerman, L.; D'Olieslager, W.

doi:10.1016/s0022-0728(82)80011-9

Cited by 42 publications

(27 citation statements)

References 11 publications

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“…6) the diffusion coefficients are estimated. D values of U(VI) in bmimCl increases from 6.64 × 10 −9 cm 2 /s at 343 K to 1.69 × 10 −8 cm 2 /s at 373 K. These values are in good agreement with the diffusion of various metal ions in ionic liquid medium [20,21,35]. Heerman et al [21] reported a D value of 2.65 × 10 −7 cm 2 /s for U(VI) in basic AlCl 3 -N-(nbutyl)pyridinium chloride ionic liquid and indicated a strong dependence of D values with composition of ionic liquids.…”

Section: Resultssupporting

confidence: 72%

“…Heerman et al [21] reported a D value of 2.65 × 10 −7 cm 2 /s for U(VI) in basic AlCl 3 -N-(nbutyl)pyridinium chloride ionic liquid and indicated a strong dependence of D values with composition of ionic liquids. De Waele et al [20] reported a D value of 3.5 × 10 −7 at 308 K for U(IV) in acidic AlCl 3 -N-(n-butyl)-pyridinium chloride ionic liquid. The diffusion coefficient is related to temperature by Arrhenius equation shown in Eq.…”

Section: Resultsmentioning

confidence: 99%

“…From the slope of the straight line, the energy of activation for the diffusion of U(VI) was found to be 54 kJ/mol. De Waele et al [20] reported the E a value of 23 kJ/mol for U(IV) species in acidic AlCl 3 -BuPyCl melts, and Kuznetsov et al [36] report a value of 34 kJ/mol for U(III) species in high temperature molten salts. Square wave voltammogram of uranyl nitrate in bmimCl, shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…They also studied the redox behavior of U(IV) in basic melts [19]. D'Olislager and coworkers reported the electrochemical behavior of U(IV) in acidic [20] and U(VI) behavior in basic melts [21] composed of AlCl 3 and N-(nbutyl)pyridinium chloride. Martinot et al [22] studied the electrochemical behavior of U(VI) in various organic solvents at ambient and high temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical behavior of uranium(VI) in 1-butyl-3-methylimidazolium chloride and thermal characterization of uranium oxide deposit

Pulletikurthi

Venkatesan

Srinivasan

et al. 2007

Electrochimica Acta

116

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Section: Resultssupporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrochemical behavior of uranium(VI) in 1-butyl-3-methylimidazolium chloride and thermal characterization of uranium oxide deposit

Pulletikurthi

Venkatesan

Srinivasan

et al. 2007

Electrochimica Acta

116

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“…Published studies of actinide systems in room temperature ionic liquid (RTIL) solvent systems have been limited to neptunium (1) and uranium (2), (3). In basic melts the reduction of U (IV) to U (111)was found to be reversible and U (IV) and U (HI) were determined to be present as the hexachloro anions over the entire basic range (4).…”

Section: Actinides In Rtilsmentioning

confidence: 99%

Actinide Chemistry in the Emic/A1c13 Room Temperature Ionic Liquid

Costa¹,

Smith²

1999

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Room temperature ionic liquids (RTIL) area relatively new class of solvents whose unique set of chemical and physical properties hold the promise of making revolutionary changes in many traditional chemical processes. We have previously reported on the redox behavior of uranyl chloride in room temperature acidic 1-ethyl-3-methyl imidazolium chloride by electrochemical and spectroscopic techniques.1'2The uranyl moiety is unstable to oxygen loss in this melt with the concomitant growth of a uranium (V) chloride species. We proposed that an equilibrium is established between the Lewis acidic A12C17 and the uranium oxy-chloride species. Similar behavior may be expected for plutonium oxide species. We have demonstrated that a basic EMIC/AICls" solution of PuC13displays one reversible oxidation and an irreversible reduction. The reversible wave has been confirmed to be associated with the Pu (111)/Pu(IV) redox couple by comparison with the CV of an authentic sample of Cszpucl(j. The irreversible reduction wave is believed to come from the reduction of a plutonium oxide contaminant. In this talk we will focus on our work on the chemistry of plutonium complexes in room temperature ionic liquids (i.e. EMIC/AlC13and EMIBF4).

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Use of ionic liquids as ‘green’ solvents for extractions

Zhao

Xia

2005

J of Chemical Tech & Biotech

829

347

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This review summarizes recent applications of ionic liquids (ILs) as ‘green’ solvents in extractions of a variety of substances, including metal ions, organic and bio‐molecules, organosulfur from fuels, and gases. ILs could also be used along with another ‘green’ technology, supercritical fluid extraction (SFE), for a more effective separation of products from ILs. In addition to their environmentally‐benign feature, ILs have other favorable properties over organic solvents used for extraction, such as adjustable hydrophobicity, polarity and selectivity. Copyright © 2005 Society of Chemical Industry

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Electrochemistry of uranium(IV) in acidic AlCl3+N-(n-butyl)pyridinium chloride room-temperature molten salts

Cited by 42 publications

References 11 publications

Electrochemical behavior of uranium(VI) in 1-butyl-3-methylimidazolium chloride and thermal characterization of uranium oxide deposit

Electrochemical behavior of uranium(VI) in 1-butyl-3-methylimidazolium chloride and thermal characterization of uranium oxide deposit

Actinide Chemistry in the Emic/A1c13 Room Temperature Ionic Liquid

Use of ionic liquids as ‘green’ solvents for extractions

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