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Saito, Junichi; Monbernier, M.*
Surfaces and Interfaces (Internet), 41, p.103248_1 - 103248_8, 2023/10
Times Cited Count：5 Percentile：57.35(Chemistry, Physical)Abe, Hiroshi*; Yamada, Takeshi*; Shibata, Kaoru
Journal of Molecular Liquids, 264, p.54 - 57, 2018/08
Times Cited Count：15 Percentile：58.19(Chemistry, Physical)Hirade, Tetsuya
Acta Physica Polonica A, 132(5), p.1470 - 1472, 2017/11
Times Cited Count：3 Percentile：27.16(Physics, Multidisciplinary)The positron annihilation lifetime measurements in RTILs showed very strange results. Finally, positron annihilation age-momentum correlation (AMOC) measurements indicated that it was caused by slow bubble formation in RTILs. Then I discovered the oscillation of o-Ps annihilation rates in room temperature ionic liquids (RTILs) which indicated, probably, the oscillation of the Ps bubble. Stepanov et al. calculated change of the bubble size in many liquids and the oscillation of the bubble was not expected except for a liquid He. It means that the structure of RTILs in nanometer scale is very different from usual liquids. Moreover, o-Ps pick-off annihilation rates seems to be too small for the macroscopic surface tension of RTILs. I am going to discuss what you can study by the positron annihilation methods for the structure of RTILs in nanometer scale.
Nagao, Seiya;
Humic Substances and Organic Matter in soil and Water Environments: Characterization,Transformations, 0, p.71 - 79, 1996/00
no abstracts in English
; Furukawa, Kazuo
First Inter.Symp.on Molten Salt Chem.Technol.,J-315, p.449 - 452, 1983/00
no abstracts in English
Furukawa, Kazuo
Kinzoku Butsuri Semina, 6(1), p.11 - 23, 1983/00
no abstracts in English
Furukawa, Kazuo; ;
Nihon Kagakkai-Shi, (6), p.942 - 946, 1982/00
no abstracts in English
Furukawa, Kazuo
Kobutsugaku Zasshi, 14(2), p.34 - 50, 1980/00
no abstracts in English
・2RCl(R=Li and K); ; ; ; Furukawa, Kazuo
J.Chem.Soc.,Faraday Trans.,I, 75(5), p.1161 - 1168, 1979/00
no abstracts in English
and their mixtures; ; Furukawa, Kazuo; ;
J.Chem.Soc.,Faraday Trans.,I, 74(7), p.1861 - 1870, 1978/07
no abstracts in English
SO
,NaSO and the mixed system; Furukawa, Kazuo
J.Chem.Soc.,Faraday Trans.,I, 74(4), p.795 - 803, 1978/04
no abstracts in English
; Furukawa, Kazuo; ; ;
J.Chem.Soc.,Faraday Trans.,I, 74(4), p.804 - 808, 1978/04
no abstracts in English
; ; Furukawa, Kazuo
J.Phys.Chem., 80(14), p.1628 - 1631, 1976/00
no abstracts in English
Furukawa, Kazuo;
Bussei Kenkyu, 19(5), p.B35 - B45, 1973/05
no abstracts in English
Furukawa, Kazuo
Denki Kagaku Semina Hobunshu, p.1 - 30, 1967/05
no abstracts in English
Ueda, Yuki
no journal, ,
The separation and recovery of PGM is carried out by a hydrometallurgy process mainly based on a solvent extraction method. In recent years, development of alternative solvents for such volatile organic solvents has been advanced. Ionic liquids (IL) has attracted substantial interest in many fields as a green alternative solvent due to their non-volatile, non-flammable, and thermally stable properties. Task-specific ionic liquids (TSIL) that functionalized by incorporating ligating group can give the extraction ability for metal ions. Many extraction systems using IL and TSIL aimed at separating PGM have been reported so far, however there is no extraction system that achieves individual separation of Pd and Pt by one type of TSIL. In this study, imidazolium bis(trifluoromethanesulfonyl) imide type TSIL incorporating a urea group was synthesized and its extraction ability for Pd and Pt was evaluated from a viewpoint the individual separation of Pd and Pt.
Kikuchi, Kei; Ueda, Yuki
no journal, ,
The production sites of the palladium (Pd) primary resources are located specific areas and its amount are limited. The social demands for Pd have been increased with increasing the social demand for fuel cells because Pd has an excellent hydrogen storage capacity. Therefore, the development of the novel separating reagents for Pd is required. In this study, the novel thiourea-introduced ionic liquid was synthesized and its extraction ability of Pd was evaluated from a viewpoint the effective recovery of Pd. Ionic liquids (ILs) are salts with the melting points below 373 K. ILs have attracted substantial interest as a green alternative solvent due to their non-volatile and non-flammable properties. From the Pd extraction study, the novel IL has highly Pd extraction ability from relatively high acidic solutions. Slope analysis and extended X-ray absorption fine structure spectroscopy of the extracted complex of Pd was carried out to determine the detail extraction mechanism.
Ueda, Yuki
no journal, ,
Palladium (Pd) and platinum (Pt) are actively used in the wide fields such as automobile and chemical industries due to its remarkable functionality. Therefore, the efficient recycling from the secondary resources is important to ensure stable supply of Pd and Pt resources. In particular, ionic liquid functionalized by organic synthesis is called Task-specific IL(TSIL), and TSIL would be possible to have an extraction ability and a high IL affinity. In this study, urea-substituted TSIL was designed and synthesized for the purpose of mutual separation of Pd(II) and Pt(IV) and its extraction performance was evaluated. In practice, urea-substituted TSIL selectively extracted Pd(II) at pH 4 and Pt(IV) at pH 1 from Pd(II) and Pt(IV) coexisting aqueous solution. In this presentation, slope analysis, EXAFS, UV-Vis, and FT-IR studies on the extraction mechanism of Pd(II) and Pt(IV) are also reported.
