JOPSS - Search Results

Search Results: Records 1-6 displayed on this page of 6

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Journal Articles

Extraction behavior of indium with TOPO into ionic liquids

Kubota, Fukiko*; Shimobori, Yosuke*; Koyanagi, Yusuke*; Nakashima, Kazunori*; Shimojo, Kojiro; Kamiya, Noriho*; Goto, Masahiro*

Solvent Extraction Research and Development, Japan, 16, p.142 - 146, 2009/00

Journal Articles

Extraction of lanthanide ions with an organophosphorous extractant into ionic liquids

Kubota, Fukiko*; Koyanagi, Yusuke*; Nakashima, Kazunori*; Shimojo, Kojiro; Kamiya, Noriho*; Goto, Masahiro*

Solvent Extraction Research and Development, Japan, 15, p.81 - 87, 2008/00

Extraction of lanthanide ions was carried out with the organophosphorous extractant PC-88A dissolved in an imidazolium-based ionic liquid. PC-88A was soluble in ionic liquids having long-chain alkyl substituents such as octyl and dodecyl groups, [C $_{8}$ mim] and [C $_{12}$ mim][TFSI], although short-chain imidazolium ionic liquids could not solubilize the extractant. The extraction equilibrium observed in the ionic liquid system was similar to that in the n-dodecane system, and the extraction behavior could be explained by the same proton exchange mechanism as for the conventional organic solvent system, although the extraction efficiency was not improved. An ionic liquid having shorter alkyl chain [C $_{8}$ mim] showed a higher extraction ability than [C $_{12}$ mim][TFSI]. Stripping of the metal ions from the ionic liquids was also examined. Quantitative stripping of the metal ions was achieved by nitric acid in the [C $_{12}$ mim][TFSI] system.

Journal Articles

Extraction of cytochrome c by a functionalized ionic liquid containing a crown ether

Kubota, Fukiko*; Koyanagi, Yusuke*; Nakashima, Kazunori*; Shimojo, Kojiro; Kamiya, Noriho*; Goto, Masahiro*

Solvent Extraction Research and Development, Japan, 14, p.115 - 120, 2007/00

We carried out the extraction of a protein cytochrome c (Cyt-c) with an ionic liquid with an attached crown ether moiety in the imidazolium cation. The functional ionic liquid, [18C6mim][PF $_{6}$ ], was dissolved in two different ionic liquids as diluents, one having a hydroxyethyl group, [C $_{2}$ OHmim][Tf $_{2}$ N], and the other an ethyl group, [C $_{2}$ mim][Tf $_{2}$ N], respectively. The transfer of Cyt-c from the aqueous phase to the ionic liquid phase took place with [18C6mim][PF $_{6}$ ] in the [C $_{2}$ OHmim][Tf $_{2}$ N] system. Although the extraction ability was lower than that of dicyclohexano-18-crown-6 (DCH18C6), the functionalized ionic liquid system gave a better stripping performance than the ordinary crown ether system. The extraction efficiency was not influenced by operating temperature when the concentration of [18C6mim] was high whereas it was greatly affected by temperature at low [18C6mim] concentration.