Extraction equilibrium of copper by versatic acid.
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概要
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The distribution equilibrium in the solvent extraction of copper (II) by w-hexane solution of Versatic 10, a commercial carboxylic acid produced by Shell Chemical Co. Ltd., from nitrate medium was measured at 30°C. The stoichiometric relation in this copper extraction reaction was found to be expressed as follows. 2Cu2+aq. +3 H2R2org. ?? (CuR2•HR)2org.+4H+aq. Kewhere the equilibrium constant was determined as Ke=1.10 × 10-13. Also, the aqueous solubility of Versatic 10, which is an indispensable datum for the economic evaluation of the commercial-scale extraction, was measured and was interpreted quantitatively in terms of the following two equilibria. H2R2org. ?? 2 HRaq. K1 HRaq. ?? H+aq.+R-aq. K2where the equilibrium constants, K1 and K2 were found to be 9.6 ± 10-7 mol/l and 1.1 × 10-6 mol/l, respectively.
- 公益社団法人 化学工学会の論文
著者
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Inoue Katsutoshi
Department Of Applied Chemistry Faculty Of Science And Engineering
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Nakamori Issei
Department of Chemical Engineering, Faculty of Engineering, Kyushu University
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AMANO HIRONORI
Department of Industrial Chemistry, Saga University
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YAYAMA YOSHIHIRO
Department of Industrial Chemistry, Saga University
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