Extraction Kinetics of Gallium with 2-Ethylhexylphosphonic Acid Mono-2-Ethylhexyl Ester
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概要
- 論文の詳細を見る
As the second step to clarify the synergistic extraction mechanism of gallium with the mixed extractant of 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (EHPNA) and 5-chloro-8-hydroxyquinoline, the initial extraction rate of gallium with EHPNA alone was measured using a stirred transfer cell.First, the aggregation state of EHPNA in the organic solvent, toluene, and the adsorption characteristics at the interface between the aqueous and organic phases were examined. EHPNA was found to exist mainly as dimers in the organic solvent and to adsorb the interface. By considering that the interface is a site for metal-complex formation, the extraction mechanism constructed with the three processes, a mass transfer of metal ions to the interface, an extraction reaction at the interface based on the Eigen mechanism, and a mass transfer of the metal-complex to the bulk organic phase, was proposed to analyze the experimental results.
- 社団法人 化学工学会の論文
- 2005-02-01
著者
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KONDO Kazuo
Department of Chemical Engineering and Materials Science, Faculty of Engineering, Doshisha Universit
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Matsumoto Michiaki
Department Of Applied Chemistry Oita University
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Matsumoto M
Department Of Chemical Engineering And Materials Science Faculty Of Engineering Doshisha University
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Kondo K
Department Of Chemical Engineering And Materials Science Faculty Of Engineering Doshisha University
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Kondo Kazuo
Department Of Chemical Engineering And Materials Science Doshisha University
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Kondo Kazuo
Department Of Applied Chemistry Okayama University
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