Water Content and Properties of Aliphatic Ammonium Imide-Type Room Temperature Ionic Liquid Containing Metal Ions

Katase, Takuma; Onishi, Toshitake; Imashuku, Susumu; Murase, Koichi; Hirato, Tetsuji; Awakura, Yasuhiro

doi:10.5796/electrochemistry.73.686

Cited by 20 publications

(14 citation statements)

References 9 publications

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“…Ni(TFSA) 2 was prepared by reacting NiCO 3 ·Ni(OH) 2 ·4H 2 O (Kanto Chemical) with HTFSA (Morita Kagaku, >99%) at 80 • C under agitation, filtrated to eliminate the unreacted inorganic metal salts, and then dried under vacuum at 160 • C for 24 h [32]. The product was yellow solid powder.…”

Section: Methodsmentioning

confidence: 99%

Electrochemical behavior of Ni(II)/Ni in a hydrophobic amide-type room-temperature ionic liquid

Zhu

Kozuma

Katayama

et al. 2009

Electrochimica Acta

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Section: Methodsmentioning

confidence: 99%

Electrochemical behavior of Ni(II)/Ni in a hydrophobic amide-type room-temperature ionic liquid

Zhu

Kozuma

Katayama

et al. 2009

Electrochimica Acta

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“…Both the thickness of the boundary layer and the concentration profile of metal ions within the layer reach those in a steady state after some time has elapsed, depending mainly on the viscosity of the electrolyte used. The ionic liquid, TMHA-Tf 2 N, has a fairly high viscosity [18] as compared with aqueous solutions, and it was considered that it might take a long time to reach a steady state boundary layer condition. Therefore, instead of a macro electrode, a micro-disk electrode was employed to measure the cyclic and linear sweep voltammograms for Cu(Tf 2 N)-TMHA-Tf 2 N solution.…”

Section: Optimization Of Potential Scan Ratementioning

confidence: 99%

“…The prepared TMHA-Tf 2 N was dried in vacuo for more than 2 h at 120°C in a flask connected to a liquid nitrogen trap, and its residual water was checked to be less than 50 ppm with the coulometric KarlFischer method [18]. The TMHA-Tf 2 N dried was stored in a glove box filled with argon gas with a water content less than 5 ppm.…”

Section: Ionic Liquidmentioning

confidence: 99%

“…The preparation procedures were described previously [15,18]. The prepared TMHA-Tf 2 N was dried in vacuo for more than 2 h at 120°C in a flask connected to a liquid nitrogen trap, and its residual water was checked to be less than 50 ppm with the coulometric KarlFischer method [18].…”

Section: Ionic Liquidmentioning

confidence: 99%

“…It is considered that the diffusion rate of metal ion in the ionic liquid, TMHA-Tf 2 N, is relatively slow due to its higher viscosity [18] compared to water. In addition, the redox behavior of metal ions in an ionic liquid are expected to be different from those in aqueous solutions, due to the difference in the ionic valency and/or coordination environment.…”

Section: Introductionmentioning

confidence: 99%

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Redox and transport behaviors of Cu(I) ions in TMHA-Tf2N ionic liquid solution

et al. 2007

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The redox and transport behavior of monovalent copper species in an ammonium imide-type ionic liquid, trimethyln-hexylammonium bis((trifluoromethyl)sulfonyl)amide (TMHA-Tf 2 N) were examined with a micro-disc electrode to clarify its applicability to, for example, electroplating. It was found that the diffusion coefficient of Cu(I) ions in TMHA-Tf 2 N containing 12 mmol dm )3 Cu(I) ions was 1.2 Â 10 )6 cm 2 s )1 and the redox potential of Cu(I)/Cu was in the potential range 0.1-0.2 V vs. I ) /I 3 ) at 50°C. The diffusion coefficient was one order smaller than that of Cu(II) ions in aqueous solution due to the high viscosity of the ionic liquid. The diffusion coefficient of Cu(I) ion increased with rising temperature and was 1.0 Â 10 )5 cm 2 s )1 at 112°C, which was comparable to that of Cu(II) ions in aqueous CuSO 4 solutions at ambient temperature. This is accounted for by the drastic decrease in the viscosity of the ionic liquid solution with increasing temperature. The activation energy of diffusion was estimated to be 39 kJ mol )1 in the ionic liquid solution.

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Aluminium Speciation in 1‐Butyl‐1‐Methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide/AlCl₃ Mixtures

Rocher¹,

Izgorodina²,

Rüther³

et al. 2009

Chemistry A European J

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Electrodeposition of aluminium is possible from solutions of AlCl(3) dissolved in the 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (C(4)mpyrNTf(2)) ionic liquid. However, electrodeposition is dependant on the AlCl(3) concentration as it only occurs at concentrations >1.6 mol L(-1). At these relatively high AlCl(3) concentrations the C(4)mpyrNTf(2)/AlCl(3) mixtures exhibit biphasic behaviour. Notably, at 1.6 mol L(-1) AlCl(3), aluminium can only be electrodeposited from the upper phase. Conversely, we found that at 3.3 mol L(-1) aluminium electrodeposition can only occur from the lower phase. The complex chemistry of the C(4)mpyrNTf(2)/AlCl(3) system is described and implications of aluminium speciation in several C(4)mpyrNTf(2)/AlCl(3) mixtures, as deduced from Raman and (27)Al NMR spectroscopic data, are discussed. The (27)Al NMR spectra of the C(4)mpyrNTf(2)/AlCl(3) mixtures revealed the presence of both tetrahedrally and octahedrally coordinated aluminium species. Raman spectroscopy revealed that the level of uncoordinated NTf(2)(-) anions decreased with increasing AlCl(3) concentration. Quantum chemical calculations using density functional and ab initio theory were employed to identify plausible aluminium-containing species and to calculate their vibrational frequencies, which in turn assisted the assignment of the observed Raman bands. The data indicate that the electroactive species involved are likely to be either [AlCl(3)(NTf(2))](-) or [AlCl(2)(NTf(2))(2)](-).

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Water Content and Properties of Aliphatic Ammonium Imide-Type Room Temperature Ionic Liquid Containing Metal Ions

Cited by 20 publications

References 9 publications

Electrochemical behavior of Ni(II)/Ni in a hydrophobic amide-type room-temperature ionic liquid

Electrochemical behavior of Ni(II)/Ni in a hydrophobic amide-type room-temperature ionic liquid

Redox and transport behaviors of Cu(I) ions in TMHA-Tf2N ionic liquid solution

Aluminium Speciation in 1‐Butyl‐1‐Methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide/AlCl₃ Mixtures

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Water Content and Properties of Aliphatic Ammonium Imide-Type Room Temperature Ionic Liquid Containing Metal Ions

Cited by 20 publications

References 9 publications

Electrochemical behavior of Ni(II)/Ni in a hydrophobic amide-type room-temperature ionic liquid

Electrochemical behavior of Ni(II)/Ni in a hydrophobic amide-type room-temperature ionic liquid

Redox and transport behaviors of Cu(I) ions in TMHA-Tf2N ionic liquid solution

Aluminium Speciation in 1‐Butyl‐1‐Methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide/AlCl3 Mixtures

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Product

Resources

About

Aluminium Speciation in 1‐Butyl‐1‐Methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide/AlCl₃ Mixtures