Extraction equilibria of gallium(III) and thallium(III) with dihexyl sulfide from hydrochloric acid.
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概要
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The extraction equilibria of gallium(III) and thallium(III) from hydrochloric acid with dihexyl sulfide (DHS=S) in 1, 2-dichloroethane were measured at 303 K to examine the effects of the concentrations of hydrochloric acid and dihexyl sulfide. The stoichiometric relation of the extraction reaction of gallium(III) was found to be: GaCl3+S→←;GaCl3S;Ke, Gawhere the equilibrium constant was evaluated as Ke, Ga=1.9×102dm3/mol. Extraction of thallium(III) was found to be expressible by the following two stoichiometric relations for low and high concentration regions of hydrochloric acid, respectively. TlCl3+H++Cl-- + 2S→←HTlCl4; Ke, T1 TlCl3+2H++2Cl-+S→←H2TlCl5S; Ke, T1where the equilibrium constants were evaluated as Ke, T1 = 4.0×106 (dm3/mol)4 and Ke, T1=1.6×105 (dm3/mol)5.
- 公益社団法人 化学工学会の論文
著者
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Nakamura Hiromi
Department Of Bioengineering And Robotics Graduate School Of Engineering Tohoku University
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Baba Yoshinari
Department Of Applied Chemistry Faculty Of Engineering Miyazaki University
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Inoue Katsutoshi
Department Of Applied Chemistry Faculty Of Science And Engineering
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NAKAMURA HIROMI
Department of Industrial Chemistry, Saga University
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