EFFECT OF ALKYL CHAIN LENGTH OF o-HYDROXYOXIME ON THE EXTRACTION OF COPPER

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

YUJI KATAYAMA¹  MASAAKI TERAMOTO¹  YOSHIKAZU MIYAKE¹  TOSHITSUGU HAMATANI¹  YASUNOBU IMANISHI¹ 

[1] Department of Industrial Chemistry, Kyoto Institute of Technology

关键词: Extraction;    Hydroxyoxime;    Interfacial Reaction;    Extraction Mechanism;    Metal Complex Formation;    Diffusion Equation;    Interfacial Excess Quantity;   

DOI  :  10.1252/jcej.19.117

来源: Maruzen Company Ltd

【 摘 要 】

References(19)Cited-By(14)The solvent extraction of copper by use of the homologous series of o-hydroxyoxime with different alkyl chains was studied to elucidate the extraction mechanism. The physicochemical properties of hydroxyoxime required to evaluate the extraction rate, such as the distribution constant, interfacial properties, pKa and extraction constant, were measured. The forward and stripping extraction rates were measured by a Lewis-type transfer cell. The extraction rate of copper by a water-soluble, surface-inactive agent can be reasonably interpreted by considering the diffusion process with complex formation in the aqueous stagnant layer. Complex formation is limited by the rate of 1:1 complex formation. On the other hand, the extraction rate with an insoluble, surface-active reagent can be interpreted by the interfacial reaction, which is limited by the reaction rate between the adsorbed 1:1 complex and the dissolved reagent in the aqueous phase.

【 授权许可】

Unknown